BSides Seattle 2024 - Stopping Ethan Hunt From Taking Your Data.pptx
STAT100.docx
1. Name: AYOC, RONALD B Schedule: TTH 4:30-5:30 PM
Instructor: DOC. CECILLE ARES Subject: STAT 100
I. A. Indicate which of the following situations involve descriptive statistics and which
involve inferential statistics:
1. An annual stockholders’ report details the assets of the corporation.
2. A humanities instructor tells his class the number of students who received an A on a
recent exam.
3. The mean of a sample set scores is calculated to characterized the sample.
4. The sample data from a poll are used to estimate the opinion of the population.
5. A correlational study is conducted on a sample to determine whether educational level
and income in the population are related.
6. A news article reports the average salaries of federal employees from data collected on
all federal employees.
7. The last four semester the instructor taught Intermediate Algebra, an average of 15
people passed the class.
8. The next time the instructor teaches Intermediate Algebra, we can expect approximately
15 people to pass the class.
9. This instructor will never pass more than 20 people in an Intermediate Algebra class.
10.The last four semesters the instructor taught Intermediate Algebra, no more than 20
people passed the class.
11.The average salary of a random sample of 50 high school teachers in 2010 was
$52,400.
12.Based on a random sample, it was concluded that the average cost of a hotel room in
Chicago was greater than one in Atlanta.
13.A study has concluded that the average credit card debt of college graduates has
increased from the year 2009 to 2010.
14.The average Amazon.com rating of the book The Complete Idiot’s Guide to Statistics by
26 reviewers is 4.6 on a scale of 1 to 5.
15.The average American viewer watches 151 hours TV per month.
2. Name: AYOC, RONALD B Schedule: TTH 4:30-5:30 PM
Instructor: DOC. CECILLE ARES Subject: STAT 100
II. A. Identify each of the following as qualitative or numerical variables:
1. The temperature in Barrow, Alaska at 12:00pm on any given day.
2. The number of automobiles driven by each faculty member.
3. Whether or not a 6 volt lantern battery is defective.
4. The weight of a lead pencil.
5. The length of time billed for a long distance telephone call.
6. The brand of cereal children eats for breakfast.
7. The type of book taken out of the library by an adult.
8. Name of Internet services provider
9. Time in hours spent surfing the Internet per week
10.Number of text messages sent in a week
11.Number of online purchases made in a month
12.Whether the individual has a Facebook profile
3. Name: AYOC, RONALD B Schedule: TTH 4:30-5:30 PM
Instructor: DOC. CECILLE ARES Subject: STAT 100
III. Identify the following as nominal level, ordinal level, interval level, or ratio level data.
1. Percentage scores on a Math exam.
2. Letter grades on an English essay.
3. Flavors of yogurt.
4. Employee evaluations classified as: Excellent, Average, and Poor.
5. Ice cream flavor preferences.
6. Number of bicycles ridden by students in the freshmen class.
7. Type of bicycles ridden by the students in the freshmen class.
8. The IQ of your teachers (assume equal interval scaling)
9. Proficiency in mathematics graded in the categories of poor, fair, and good.
10.Anxiety over public speaking scored on a scale 1-100 (assume the difference in is
anxiety between adjacent units throughout the scale is not the same)
11.Horsepower of motorcycle engines
12.TV show ratings (poor, fair, good, excellent)
13.Time required by drivers to complete a night course
14.Salaries of cashiers at the Piggly Wiggly for a day shift and night shift
15.Material status of respondents to a survey on savings accounts
16.Ages of students enrolled in a martial arts course
17.Weights of beef cattle fed a special diet
18.Ranking of weight lifters
19.Pages in the telephone book for the city of Los Angeles
4. Name: SANTISTEBAN, PAUL CHRISTIAN Schedule: TTH 4:30-5:30 PM
Instructor: DOC. CECILLE ARES Subject: STAT 100
IV. A. Indicate which of the following situations involve descriptive statistics and which
involve inferential statistics:
16.An annual stockholders’ report details the assets of the corporation.
17.A humanities instructor tells his class the number of students who received an A on a
recent exam.
18.The mean of a sample set scores is calculated to characterized the sample.
19.The sample data from a poll are used to estimate the opinion of the population.
20.A correlational study is conducted on a sample to determine whether educational level
and income in the population are related.
21.A news article reports the average salaries of federal employees from data collected on
all federal employees.
22.The last four semester the instructor taught Intermediate Algebra, an average of 15
people passed the class.
23.The next time the instructor teaches Intermediate Algebra, we can expect approximately
15 people to pass the class.
24.This instructor will never pass more than 20 people in an Intermediate Algebra class.
25.The last four semesters the instructor taught Intermediate Algebra, no more than 20
people passed the class.
26.The average salary of a random sample of 50 high school teachers in 2010 was
$52,400.
27.Based on a random sample, it was concluded that the average cost of a hotel room in
Chicago was greater than one in Atlanta.
28.A study has concluded that the average credit card debt of college graduates has
increased from the year 2009 to 2010.
29.The average Amazon.com rating of the book The Complete Idiot’s Guide to Statistics by
26 reviewers is 4.6 on a scale of 1 to 5.
30.The average American viewer watches 151 hours TV per month.
5. Name: SANTISTEBAN, PAUL CHRISTIAN Schedule: TTH 4:30-5:30 PM
Instructor: DOC. CECILLE ARES Subject: STAT 100
V. A. Identify each of the following as qualitative or numerical variables:
13.The temperature in Barrow, Alaska at 12:00pm on any given day.
14.The number of automobiles driven by each faculty member.
15.Whether or not a 6 volt lantern battery is defective.
16.The weight of a lead pencil.
17.The length of time billed for a long distance telephone call.
18.The brand of cereal children eats for breakfast.
19.The type of book taken out of the library by an adult.
20.Name of Internet services provider
21.Time in hours spent surfing the Internet per week
22.Number of text messages sent in a week
23.Number of online purchases made in a month
24.Whether the individual has a Facebook profile
6. Name: SANTISTEBAN, PAUL CHRISTIAN Schedule: TTH 4:30-5:30 PM
Instructor: DOC. CECILLE ARES Subject: STAT 100
VI. Identify the following as nominal level, ordinal level, interval level, or ratio level data.
20.Percentage scores on a Math exam.
21.Letter grades on an English essay.
22.Flavors of yogurt.
23.Employee evaluations classified as: Excellent, Average, and Poor.
24.Ice cream flavor preferences.
25.Number of bicycles ridden by students in the freshmen class.
26.Type of bicycles ridden by the students in the freshmen class.
27.The IQ of your teachers (assume equal interval scaling)
28.Proficiency in mathematics graded in the categories of poor, fair, and good.
29.Anxiety over public speaking scored on a scale 1-100 (assume the difference in is
anxiety between adjacent units throughout the scale is not the same)
30.Horsepower of motorcycle engines
31.TV show ratings (poor, fair, good, excellent)
32.Time required by drivers to complete a night course
33.Salaries of cashiers at the Piggly Wiggly for a day shift and night shift
34.Material status of respondents to a survey on savings accounts
35.Ages of students enrolled in a martial arts course
36.Weights of beef cattle fed a special diet
37.Ranking of weight lifters
38.Pages in the telephone book for the city of Los Angeles
