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Lecture08
The document discusses the concept of correlation as a way to quantify the association between two variables. It explains that correlation standardizes the covariance between two variables by dividing by the product of their standard deviations. This results in a correlation value between -1 and 1, where values closer to -1 or 1 indicate a stronger linear relationship between the variables. The correlation coefficient provides a standardized way to measure the strength and direction of association between two quantitative variables.
Recommended
Lecture08
The document discusses the concept of correlation as a way to quantify the association between two variables. It explains that correlation standardizes the covariance between two variables by dividing by the product of their standard deviations. This results in a correlation value between -1 and 1, where values closer to -1 or 1 indicate a stronger linear relationship between the variables. The correlation coefficient provides a standardized way to measure the strength and direction of association between two quantitative variables.
Quantifiers
The document discusses quantifiers used to express quantity in English. It provides examples of plural and uncountable nouns and quantifiers to indicate excess, desire for more, large quantity, and small quantity. It also gives examples of transforming sentences that use quantifiers like "too small," "too big," "too fast," and "too young" into equivalent sentences using the positive forms "not big enough," "too large," "driving too fast," and "too young."
Assignments W08
This document provides steps for designing effective assignments in Moodle. It recommends considering why an assignment is being created, what it should accomplish, how it should be structured, how it will be graded, and providing clear details and examples to avoid confusion. Providing opportunities for student discussion can also help improve assignments.
The challenges of successfully executing a SOA strategy in a complex outsourc...
This is the presentation I gave at WSO2con 2013 in which I shared with the experience implementing SOA at the Ministry of Infrastructure and the Environment in the Netherlands. The challenges the ministry faced as an organisation that has outsourced it’s IT. How these challenges affected the SOA strategy and how some of these challenges were addressed with WSO2 products.
Periodic table
The document discusses key concepts from the periodic table including its organization, elements, trends, and measurements. It provides information on Dmitri Mendeleev's creation of the first periodic table and how it is organized today. The periodic law and trends in atomic radius, ionization energy, electronegativity, and electron affinity across and down the table are also summarized.
Med Apps Nuclear Science
Radiation can be ionizing or non-ionizing, with ionizing radiation capable of damaging biological tissues. Absorbed radiation dose is measured in units like rads and grays, while biological effectiveness is measured using quality factors ranging from 1 to 20 depending on radiation type. Exposure levels are regulated to limit health risks like cancer, with annual limits of 0.5 rem for the public and 5 rem for radiation workers.
Iweb
This document provides an overview of using iWeb in the classroom for creating websites. It discusses the National Educational Technology Standards, what iWeb is, ways to start using it like creating a class website with pages and media. Alternatives like content management systems and wikis are mentioned. Considerations for using iWeb vs wikis are provided. It also discusses where files are stored, having multiple iWeb sites, and provides an assignment to create a website with specific elements like pages, text, links, images, movies and widgets.
Measurement
The document discusses various concepts related to measurement and error including:
- Defining accuracy as closeness to the true value and precision as reproducibility of measurements.
- Types of errors such as determinate/systematic errors which can be corrected and indeterminate/random errors which average out with multiple trials.
- Assessing total error by treating a reference standard as a sample and calculating differences from the reference value.
- Expressing accuracy and precision using terms like mean, percent error, range, standard deviation, and percent coefficient of variation.
Thiols & sulfides
Thiols are sulfur analogs of alcohols and are also called mercaptans. Sulfides are sulfur analogs of ethers and are also known as thioethers. Thiols and sulfides have lower boiling points and are less soluble in water than other alcohols and ethers. They also show little association through hydrogen bonding. Common thiols include those that give onions and garlic their smell, while common sulfides include metal sulfides like silver sulfide, mercury sulfide, and lead sulfide. Thiols and sulfides are used in industries like oil, gas, pulp and paper.
Work And Simple Machines
Work is defined scientifically as a force causing an object to move in the direction of the force. Simple machines like levers, pulleys, and inclined planes allow people to do work more easily by increasing force or distance of movement. They provide mechanical advantage by changing the direction or magnitude of force. Common simple machines are the lever, wheel and axle, inclined plane, wedge, screw, and pulley. Each machine trades off either force or distance depending on its class.
What Is Physics
Physics is the science of matter, energy, space, and time that studies the interactions between physical systems. It aims to describe natural phenomena through basic laws and quantities derived from experimentation. Some key topics in physics include mechanics, waves, thermodynamics, electricity, nuclear physics, and quantum mechanics.
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Quantifiers
The document discusses quantifiers used to express quantity in English. It provides examples of plural and uncountable nouns and quantifiers to indicate excess, desire for more, large quantity, and small quantity. It also gives examples of transforming sentences that use quantifiers like "too small," "too big," "too fast," and "too young" into equivalent sentences using the positive forms "not big enough," "too large," "driving too fast," and "too young."
Assignments W08
This document provides steps for designing effective assignments in Moodle. It recommends considering why an assignment is being created, what it should accomplish, how it should be structured, how it will be graded, and providing clear details and examples to avoid confusion. Providing opportunities for student discussion can also help improve assignments.
The challenges of successfully executing a SOA strategy in a complex outsourc...
This is the presentation I gave at WSO2con 2013 in which I shared with the experience implementing SOA at the Ministry of Infrastructure and the Environment in the Netherlands. The challenges the ministry faced as an organisation that has outsourced it’s IT. How these challenges affected the SOA strategy and how some of these challenges were addressed with WSO2 products.
Periodic table
The document discusses key concepts from the periodic table including its organization, elements, trends, and measurements. It provides information on Dmitri Mendeleev's creation of the first periodic table and how it is organized today. The periodic law and trends in atomic radius, ionization energy, electronegativity, and electron affinity across and down the table are also summarized.
Med Apps Nuclear Science
Radiation can be ionizing or non-ionizing, with ionizing radiation capable of damaging biological tissues. Absorbed radiation dose is measured in units like rads and grays, while biological effectiveness is measured using quality factors ranging from 1 to 20 depending on radiation type. Exposure levels are regulated to limit health risks like cancer, with annual limits of 0.5 rem for the public and 5 rem for radiation workers.
Iweb
This document provides an overview of using iWeb in the classroom for creating websites. It discusses the National Educational Technology Standards, what iWeb is, ways to start using it like creating a class website with pages and media. Alternatives like content management systems and wikis are mentioned. Considerations for using iWeb vs wikis are provided. It also discusses where files are stored, having multiple iWeb sites, and provides an assignment to create a website with specific elements like pages, text, links, images, movies and widgets.
Measurement
The document discusses various concepts related to measurement and error including:
- Defining accuracy as closeness to the true value and precision as reproducibility of measurements.
- Types of errors such as determinate/systematic errors which can be corrected and indeterminate/random errors which average out with multiple trials.
- Assessing total error by treating a reference standard as a sample and calculating differences from the reference value.
- Expressing accuracy and precision using terms like mean, percent error, range, standard deviation, and percent coefficient of variation.
Thiols & sulfides
Thiols are sulfur analogs of alcohols and are also called mercaptans. Sulfides are sulfur analogs of ethers and are also known as thioethers. Thiols and sulfides have lower boiling points and are less soluble in water than other alcohols and ethers. They also show little association through hydrogen bonding. Common thiols include those that give onions and garlic their smell, while common sulfides include metal sulfides like silver sulfide, mercury sulfide, and lead sulfide. Thiols and sulfides are used in industries like oil, gas, pulp and paper.
Work And Simple Machines
Work is defined scientifically as a force causing an object to move in the direction of the force. Simple machines like levers, pulleys, and inclined planes allow people to do work more easily by increasing force or distance of movement. They provide mechanical advantage by changing the direction or magnitude of force. Common simple machines are the lever, wheel and axle, inclined plane, wedge, screw, and pulley. Each machine trades off either force or distance depending on its class.
What Is Physics
Physics is the science of matter, energy, space, and time that studies the interactions between physical systems. It aims to describe natural phenomena through basic laws and quantities derived from experimentation. Some key topics in physics include mechanics, waves, thermodynamics, electricity, nuclear physics, and quantum mechanics.
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