"Fare didattica nel web 2.0" - terzo incontroMonica Terenghi
Terzo e ultimo incontro del corso di formazione "Fare didattica nel web 2.0" (by Francesca Berengo, Mara Masseroni, Luigi Petruzziello, Monica Terenghi)
Tutorial per Moodle (utilizzato nel secondo incontro del corso "Fare didattica nel web 2.0") by Francesca Berengo, Mara Masseroni, Luigi Petruzziello, Monica Terenghi
"Fare didattica nel web 2.0" - programma del 2° incontroMonica Terenghi
Panoramica sugli ambienti/strumenti 2.0 e sulle relative risorse che i corsisti hanno a disposizione nella fase online del corso (by Francesca Berengo, Mara Masseroni, Luigi Petruzziello, Monica Terenghi)
"Fare didattica nel web 2.0" - terzo incontroMonica Terenghi
Terzo e ultimo incontro del corso di formazione "Fare didattica nel web 2.0" (by Francesca Berengo, Mara Masseroni, Luigi Petruzziello, Monica Terenghi)
Tutorial per Moodle (utilizzato nel secondo incontro del corso "Fare didattica nel web 2.0") by Francesca Berengo, Mara Masseroni, Luigi Petruzziello, Monica Terenghi
"Fare didattica nel web 2.0" - programma del 2° incontroMonica Terenghi
Panoramica sugli ambienti/strumenti 2.0 e sulle relative risorse che i corsisti hanno a disposizione nella fase online del corso (by Francesca Berengo, Mara Masseroni, Luigi Petruzziello, Monica Terenghi)
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
2024 State of Marketing Report – by HubspotMarius Sescu
https://www.hubspot.com/state-of-marketing
· Scaling relationships and proving ROI
· Social media is the place for search, sales, and service
· Authentic influencer partnerships fuel brand growth
· The strongest connections happen via call, click, chat, and camera.
· Time saved with AI leads to more creative work
· Seeking: A single source of truth
· TLDR; Get on social, try AI, and align your systems.
· More human marketing, powered by robots
ChatGPT is a revolutionary addition to the world since its introduction in 2022. A big shift in the sector of information gathering and processing happened because of this chatbot. What is the story of ChatGPT? How is the bot responding to prompts and generating contents? Swipe through these slides prepared by Expeed Software, a web development company regarding the development and technical intricacies of ChatGPT!
Product Design Trends in 2024 | Teenage EngineeringsPixeldarts
The realm of product design is a constantly changing environment where technology and style intersect. Every year introduces fresh challenges and exciting trends that mold the future of this captivating art form. In this piece, we delve into the significant trends set to influence the look and functionality of product design in the year 2024.
How Race, Age and Gender Shape Attitudes Towards Mental HealthThinkNow
Mental health has been in the news quite a bit lately. Dozens of U.S. states are currently suing Meta for contributing to the youth mental health crisis by inserting addictive features into their products, while the U.S. Surgeon General is touring the nation to bring awareness to the growing epidemic of loneliness and isolation. The country has endured periods of low national morale, such as in the 1970s when high inflation and the energy crisis worsened public sentiment following the Vietnam War. The current mood, however, feels different. Gallup recently reported that national mental health is at an all-time low, with few bright spots to lift spirits.
To better understand how Americans are feeling and their attitudes towards mental health in general, ThinkNow conducted a nationally representative quantitative survey of 1,500 respondents and found some interesting differences among ethnic, age and gender groups.
Technology
For example, 52% agree that technology and social media have a negative impact on mental health, but when broken out by race, 61% of Whites felt technology had a negative effect, and only 48% of Hispanics thought it did.
While technology has helped us keep in touch with friends and family in faraway places, it appears to have degraded our ability to connect in person. Staying connected online is a double-edged sword since the same news feed that brings us pictures of the grandkids and fluffy kittens also feeds us news about the wars in Israel and Ukraine, the dysfunction in Washington, the latest mass shooting and the climate crisis.
Hispanics may have a built-in defense against the isolation technology breeds, owing to their large, multigenerational households, strong social support systems, and tendency to use social media to stay connected with relatives abroad.
Age and Gender
When asked how individuals rate their mental health, men rate it higher than women by 11 percentage points, and Baby Boomers rank it highest at 83%, saying it’s good or excellent vs. 57% of Gen Z saying the same.
Gen Z spends the most amount of time on social media, so the notion that social media negatively affects mental health appears to be correlated. Unfortunately, Gen Z is also the generation that’s least comfortable discussing mental health concerns with healthcare professionals. Only 40% of them state they’re comfortable discussing their issues with a professional compared to 60% of Millennials and 65% of Boomers.
Race Affects Attitudes
As seen in previous research conducted by ThinkNow, Asian Americans lag other groups when it comes to awareness of mental health issues. Twenty-four percent of Asian Americans believe that having a mental health issue is a sign of weakness compared to the 16% average for all groups. Asians are also considerably less likely to be aware of mental health services in their communities (42% vs. 55%) and most likely to seek out information on social media (51% vs. 35%).
AI Trends in Creative Operations 2024 by Artwork Flow.pdfmarketingartwork
This article is all about what AI trends will emerge in the field of creative operations in 2024. All the marketers and brand builders should be aware of these trends for their further use and save themselves some time!
A report by thenetworkone and Kurio.
The contributing experts and agencies are (in an alphabetical order): Sylwia Rytel, Social Media Supervisor, 180heartbeats + JUNG v MATT (PL), Sharlene Jenner, Vice President - Director of Engagement Strategy, Abelson Taylor (USA), Alex Casanovas, Digital Director, Atrevia (ES), Dora Beilin, Senior Social Strategist, Barrett Hoffher (USA), Min Seo, Campaign Director, Brand New Agency (KR), Deshé M. Gully, Associate Strategist, Day One Agency (USA), Francesca Trevisan, Strategist, Different (IT), Trevor Crossman, CX and Digital Transformation Director; Olivia Hussey, Strategic Planner; Simi Srinarula, Social Media Manager, The Hallway (AUS), James Hebbert, Managing Director, Hylink (CN / UK), Mundy Álvarez, Planning Director; Pedro Rojas, Social Media Manager; Pancho González, CCO, Inbrax (CH), Oana Oprea, Head of Digital Planning, Jam Session Agency (RO), Amy Bottrill, Social Account Director, Launch (UK), Gaby Arriaga, Founder, Leonardo1452 (MX), Shantesh S Row, Creative Director, Liwa (UAE), Rajesh Mehta, Chief Strategy Officer; Dhruv Gaur, Digital Planning Lead; Leonie Mergulhao, Account Supervisor - Social Media & PR, Medulla (IN), Aurelija Plioplytė, Head of Digital & Social, Not Perfect (LI), Daiana Khaidargaliyeva, Account Manager, Osaka Labs (UK / USA), Stefanie Söhnchen, Vice President Digital, PIABO Communications (DE), Elisabeth Winiartati, Managing Consultant, Head of Global Integrated Communications; Lydia Aprina, Account Manager, Integrated Marketing and Communications; Nita Prabowo, Account Manager, Integrated Marketing and Communications; Okhi, Web Developer, PNTR Group (ID), Kei Obusan, Insights Director; Daffi Ranandi, Insights Manager, Radarr (SG), Gautam Reghunath, Co-founder & CEO, Talented (IN), Donagh Humphreys, Head of Social and Digital Innovation, THINKHOUSE (IRE), Sarah Yim, Strategy Director, Zulu Alpha Kilo (CA).
Trends In Paid Search: Navigating The Digital Landscape In 2024Search Engine Journal
The search marketing landscape is evolving rapidly with new technologies, and professionals, like you, rely on innovative paid search strategies to meet changing demands.
It’s important that you’re ready to implement new strategies in 2024.
Check this out and learn the top trends in paid search advertising that are expected to gain traction, so you can drive higher ROI more efficiently in 2024.
You’ll learn:
- The latest trends in AI and automation, and what this means for an evolving paid search ecosystem.
- New developments in privacy and data regulation.
- Emerging ad formats that are expected to make an impact next year.
Watch Sreekant Lanka from iQuanti and Irina Klein from OneMain Financial as they dive into the future of paid search and explore the trends, strategies, and technologies that will shape the search marketing landscape.
If you’re looking to assess your paid search strategy and design an industry-aligned plan for 2024, then this webinar is for you.
5 Public speaking tips from TED - Visualized summarySpeakerHub
From their humble beginnings in 1984, TED has grown into the world’s most powerful amplifier for speakers and thought-leaders to share their ideas. They have over 2,400 filmed talks (not including the 30,000+ TEDx videos) freely available online, and have hosted over 17,500 events around the world.
With over one billion views in a year, it’s no wonder that so many speakers are looking to TED for ideas on how to share their message more effectively.
The article “5 Public-Speaking Tips TED Gives Its Speakers”, by Carmine Gallo for Forbes, gives speakers five practical ways to connect with their audience, and effectively share their ideas on stage.
Whether you are gearing up to get on a TED stage yourself, or just want to master the skills that so many of their speakers possess, these tips and quotes from Chris Anderson, the TED Talks Curator, will encourage you to make the most impactful impression on your audience.
See the full article and more summaries like this on SpeakerHub here: https://speakerhub.com/blog/5-presentation-tips-ted-gives-its-speakers
See the original article on Forbes here:
http://www.forbes.com/forbes/welcome/?toURL=http://www.forbes.com/sites/carminegallo/2016/05/06/5-public-speaking-tips-ted-gives-its-speakers/&refURL=&referrer=#5c07a8221d9b
ChatGPT and the Future of Work - Clark Boyd Clark Boyd
Everyone is in agreement that ChatGPT (and other generative AI tools) will shape the future of work. Yet there is little consensus on exactly how, when, and to what extent this technology will change our world.
Businesses that extract maximum value from ChatGPT will use it as a collaborative tool for everything from brainstorming to technical maintenance.
For individuals, now is the time to pinpoint the skills the future professional will need to thrive in the AI age.
Check out this presentation to understand what ChatGPT is, how it will shape the future of work, and how you can prepare to take advantage.
A brief introduction to DataScience with explaining of the concepts, algorithms, machine learning, supervised and unsupervised learning, clustering, statistics, data preprocessing, real-world applications etc.
It's part of a Data Science Corner Campaign where I will be discussing the fundamentals of DataScience, AIML, Statistics etc.
Time Management & Productivity - Best PracticesVit Horky
Here's my presentation on by proven best practices how to manage your work time effectively and how to improve your productivity. It includes practical tips and how to use tools such as Slack, Google Apps, Hubspot, Google Calendar, Gmail and others.
The six step guide to practical project managementMindGenius
The six step guide to practical project management
If you think managing projects is too difficult, think again.
We’ve stripped back project management processes to the
basics – to make it quicker and easier, without sacrificing
the vital ingredients for success.
“If you’re looking for some real-world guidance, then The Six Step Guide to Practical Project Management will help.”
Dr Andrew Makar, Tactical Project Management
Beginners Guide to TikTok for Search - Rachel Pearson - We are Tilt __ Bright...
Indici di tendenza centrale
1. INDICI DI TENDENZA CENTRALE
MODA
MEDIA
MEDIANA
Gruppo Statistica A cura di Monica Terenghi
1 IRRE Lombardia
2. Per semplificare la lettura e l’interpretazione di un
fenomeno statistico, i dati possono essere:
organizzati in una tabella
insieme tabella tabella
di dati unità stat./ modalità/
statistici modalità frequenze
Gruppo Statistica
2 IRRE Lombardia
3. Per semplificare la lettura e l’interpretazione di un
fenomeno statistico, i dati possono essere:
rappresentati mediante un grafico
tabella
dati
statistici
Gruppo Statistica
3 IRRE Lombardia
4. Per semplificare la lettura e l’interpretazione di un
fenomeno statistico, i dati possono essere:
elaborati e sintetizzati in un unico dato
tabella indice
dati centrale
statistici
Gruppo Statistica
4 IRRE Lombardia
5. L’indice centrale fornisce
un’unica informazione
La sintesi dei dati deve conservare l’informazione
più significativa
indice
tabella centrale
dati (un’unica
informazione
statistici ricca
da conservare
(tante informazione)
informazioni)
Gruppo Statistica
5 IRRE Lombardia
6. L’indice centrale deve descrivere
come si è manifestato il fenomeno
L’informazione da conservare è quindi legata alle
modalità del carattere indagato
tabella
dati indice
sintesi delle centrale
statistici
modalità
(tante
modalità)
Gruppo Statistica
6 IRRE Lombardia
7. INDICI CENTRALI PER
CARATTERI QUALITATIVI
1° CASO
il carattere si manifesta con modalità sempre
diverse
(o con ripetizioni non significative)
NON ESISTE UN MODO PER STABILIRE
UN INDICE DI TENDENZA
Gruppo Statistica
7 IRRE Lombardia
8. Esempio 1: quattro amici alla domanda “quale sport
preferisci?” hanno dato quattro risposte diverse.
u.s. modalità
Andrea
NON ESISTE
Barbara informazione un indice
da conservare
???
centrale
Carlo
Diego
Gruppo Statistica
8 IRRE Lombardia
9. INDICI CENTRALI PER
CARATTERI QUALITATIVI
2° CASO
il carattere si manifesta con modalità
che a volte si ripetono
Si può descrivere il fenomeno
conservando solo l’informazione relativa
alla modalità più
frequente, la MODA
Gruppo Statistica
9 IRRE Lombardia
10. Esempio 2: tra i 4 corsi offerti da un centro
sportivo, 25 ragazzi hanno optato per uno di essi
secondo la seguente tabella:
modalità frequenza
7
MODA
4 modalità con
frequenza max
12
2
Gruppo Statistica
10 IRRE Lombardia
11. INDICI CENTRALI PER
CARATTERI QUALITATIVI
3° CASO
il carattere, pur se qualitativo, si manifesta
con modalità ordinabili
Si può descrivere il fenomeno
conservando solo l’informazione relativa
alla modalità che occupa la posizione
centrale, la MEDIANA
Gruppo Statistica
11 IRRE Lombardia
12. Esempio 3: tra i 25 dipendenti di una ditta, il titolo di
studio risulta così distribuito:
modalità frequenza
ordinate
Lic. elemen. 1 MEDIANA
modalità con
Lic. media 10 posizione centrale Diploma
(la 13a)
Diploma 8
Laurea 6
Gruppo Statistica
12 IRRE Lombardia
13. Si perdono le informazioni relative ai singoli
titoli di studio; si conserva solo il titolo di
studio centrale
modalità frequenza modalità frequenza
ordinate
Max il
diploma 12
Lic. elemen. 1
mediana: Sicuramente
Lic. media 10 diploma il diploma 1
Almeno il
Diploma 8
diploma 12
Laurea 6
Gruppo Statistica
13 IRRE Lombardia
14. INDICI CENTRALI PER
CARATTERI QUANTITATIVI
E’ evidente che anche in questo caso è possibile
calcolare:
a volte la MODA (se il carattere si manifesta
con modalità che si ripetono)
sempre la MEDIANA (un carattere quantitativo
ha modalità ordinabili)
Gruppo Statistica
14 IRRE Lombardia
15. Esempio 1: in un condominio con 25 appartamenti, il
numero di occupanti ogni singolo appartamento è
così distribuito:
modalità frequenza
ordinate
7 MODA
modalità con
4 frequenza max
12
2
Gruppo Statistica
15 IRRE Lombardia
16. Esempio 2: dopo una gara tra 5 concorrenti viene
compilata la classifica
u.s. mod.
giocat. punti
MEDIANA
Barbara 8 informazione da
Enza 8
conservare: 7
punteggio centrale
Andrea 7
Carlo 6
Diego 2
Gruppo Statistica
16 IRRE Lombardia
17. ALTRI INDICI CENTRALI PER CARATTERI
QUANTITATIVI: LE MEDIE
Le modalità
sono espresse da numeri.
E’ possibile allora eseguire un’operazione
opportunamente scelta e ottenere
una grandezza che dipenda dalle modalità.
Gruppo Statistica
17 IRRE Lombardia
18. Calcolare una MEDIA significa:
Sintetizzare le modalità di un carattere quantitativo
in modo da conservare una grandezza che da esse
dipenda.
tabella
grandezza MEDIA
dati
da conservare
statistici
Gruppo Statistica
18 IRRE Lombardia
19. Esempio 1: si vuole valutare il profitto medio in
matematica di uno studente che in 5 prove abbia
riportato i seguenti voti:
u.s. mod.
PROVA VOTO
prima 7
voto medio
seconda 8 grandezza da
m?
terza 6 conservare?
quarta 2
quinta 8
Gruppo Statistica
19 IRRE Lombardia
20. Il voto medio può essere calcolato in modo
che, sostituito ai singoli voti, esso non alteri il
punteggio totale raggiunto dallo studente
u.s. mod.
PROVA VOTO
prima 7
grandezza da voto medio
seconda 8 conservare m?
terza 6 7+8+6+2+8
quarta 2
quinta 8
Gruppo Statistica
20 IRRE Lombardia
21. La media che conserva la SOMMA è la
MEDIA ARITMETICA
u.s. mod.
PROVA VOTO
voto medio
prima 7
seconda 8 7+8+6+2+8 = 7 8 6 2 8
m+m+m+m+m m
terza 6 5
quarta 2 6,2
quinta 8
Gruppo Statistica
21 IRRE Lombardia
22. Si perdono le informazioni portate dai singoli
voti; si conserva il punteggio totale
u.s. mod. u.s. mod.
PROVA VOTO PROVA VOTO
prima 7 prima 6,2
seconda 8 media aritmetica: seconda 6,2
6,2 terza 6,2
terza 6
quarta 2 quarta 6,2
quinta 8 quinta 6,2
totale 31 totale 31
Gruppo Statistica
22 IRRE Lombardia
23. Esempio 2: si vuole valutare lo spigolo del cubo avente
la stessa capacità di un parallelepipedo delle seguenti
dimensioni:
c m
a
b m
grandezza da m
conservare?
u.s. mod.
spigolo cm m sarà una media
a 12 delle dimensioni del
b 9 parallelepipedo
c 2
Gruppo Statistica
23 IRRE Lombardia
24. Lo spigolo del cubo deve essere calcolato in modo da
conservare il volume del parallelepipedo
c m
a
b m
grandezza da
conservare m
u.s. mod. 12 x 9 x 2
spigolo cm spigolo medio
a 12 m?
b 9
c 2
Gruppo Statistica
24 IRRE Lombardia
25. La media che conserva il PRODOTTO è
la MEDIA GEOMETRICA
c m
a
b m
12 x 9 x 2 = m
mxmxm
u.s. mod.
spigolo cm
spigolo medio
a 12 m = 3 (12x9x2)=6
b 9
c 2
Gruppo Statistica
25 IRRE Lombardia
26. Si perdono le informazioni relative ai singoli
spigoli; si conserva il volume
c c
a a
b b
media geometrica: u.s. mod.
u.s. mod.
6 spigolo cm
spigolo cm
a 12 a 6
b 9 b 6
c 2 c 6
volume 216 cm3 volume 216 cm3
Gruppo Statistica
26 IRRE Lombardia
27. PRINCIPALI TIPI DI MEDIA
t ip o d i M E D I A g ra n d e z z a d a c on se rva re form u la m = .....
x1 x 2 ..... x n m m ..... m x1 x 2 ..... x n
A RIT M ET ICA m
n
x 1 x 2 ..... x n m m ..... m
G EO M ET RICA
n
m x 1 x 2 ..... x n
1
A RM O N ICA 1 1 1 1 1 1 1 1 1 1
..... ..... m .....
x1 x2 xn m m m n x1 x2 xn
2 2 2 2 2 2
Q U A D RA T ICA
2 2 2
x1 x2 ..... x n m m ..... m x1 x2 ..... x n
m
n
Gruppo Statistica
27 IRRE Lombardia
28. Confronto tra
MODA, MEDIA e MEDIANA
In una ditta dove euro/mese frequenza
lavorano 50 23.000 1
persone, gli 9.400 1
stipendi mensili 6.500 2
sono ripartiti 2.600 3
2.200 19
secondo la
1.700 22
tabella a fianco
1.300 2
Gruppo Statistica
28 IRRE Lombardia
29. Il proprietario, un operaio e il commercialista
della ditta fanno le seguenti affermazioni:
La paga La paga La paga
media è di media è di media è di
2.700 euro 1.700 euro 2.200 euro
Gruppo Statistica
29 IRRE Lombardia
30. Chi di loro sta affermando il falso?
La paga La paga La paga
media è di media è di media è di
2.700 euro 1.700 euro 2.200 euro
Gruppo Statistica
30 IRRE Lombardia
31. Nessuno!
In realtà tutti hanno una “ragione”
La paga La paga La paga
media è di media è di media è di
2.700 euro 1.700 euro 2.200 euro
Gruppo Statistica
31 IRRE Lombardia
32. Cosa intende il proprietario dicendo che la
paga media è di 2.700 euro?
Se sommo gli euro/mese frequenza
stipendi di 23.000 1
tutti e divido Media aritmetica =
9.400 1
per 50
135.000 : 50 =
ottengo 2.700 6.500 2
2.600 3 2.700
2.200 19
1.700 22
1.300 2
135.000 50
Gruppo Statistica
32 IRRE Lombardia
33. Cosa intende l’operaio dicendo che la paga
media è di 1.700 euro?
La maggior euro/mese frequenza
parte dei 23.000 1
dipendenti
9.400 1
guadagna
moda = 1.700
1.700 euro 6.500 2
2.600 3
2.200 19
1.700 22
1.300 2
Gruppo Statistica
33 IRRE Lombardia
34. Cosa intende il commercialista dicendo che la
paga media è di 2.200 euro?
Chi guadagna euro/mese fr. pos.
2.200 euro è a 23.000 1 1°
mediana =
metà classifica
rispetto agli 9.400 1 2° Stipendio
altri stipendi 6.500 2 3°-4° in 25-26ma
2.600 3 5°-7° posizione=
2.200 19 8°-26° 2.200
1.700 22 27°-48°
1.300 2 49°-50°
Gruppo Statistica
34 IRRE Lombardia