1. We Want to Measure Height As a Function of Gender

CHAPTER 1

1. We want to measure height as a function of gender.

a. The DV is ______

b. The IV is ______

c. Is the IV an organismic/subject variable? ______

2. If we consider this class as all and only the people we want to study, they represent a ______.

3. If we choose only a subset of the class to study, they represent a ______.

4. If we calculate the average height of the small subset, the resulting number is a ______.

5. If we calculate the average height of the whole class, the resulting number is a ______.

CHAPTER 2

1. Weight uses what type of measurement scale? ______

2. Year in college uses what type of measurement scale? ______

3. Gender uses what type of measurement scale? ______

4. Temperature uses what type of measurement scale? ______

5. What are the true limits of your weight? ______

6. Given the following data (# ranked as most prefer to do alone).

MalesFemales

scuba dive

read a book

watch tv

visit a new country

a. What is the overall ratio of males to females? ______

b. What is the frequency of males preferring tv? ______

c. Out of those preferring scuba, what proportion are female? ______

d. Out of the males, what percent prefer visiting a country? ______

CHAPTER 3

1. Given the data provided on the class web page:

a. What is the width of the class if we want 6 classes?

ClassTrue LimitsMidpointFreq. Cum. Freq.Cum %

c. What is the Percentile Rank for a score of (-36)?

d. What is the score at the 75th percentile?

CHAPTER 7

1. Plot the following data on the appropriate graph (least prefer to do with someone).

MalesFemales

scuba diving

read a book

watch tv

visit a new country

2. Plot the cumulative % data from chapter 3 on the appropriate graph.

3. Plot the following data on the appropriate graph.

MalesFemales

senior

junior

sophomore

freshman

CHAPTER 4

1. Given the data on the web page.

a. What is the mean weight change of the juniors?

b. What is the median weight of seniors?

c. What is the mode of the weight loss of the freshman?

d. What is the weighted mean for the following?

groupmean estimationf

seniors

juniors

sophomores

freshman

CHAPTER 5

1. Given the change in hours of tv data found on the web page:

a. What is the range of hours for males?

b. Using mean deviation method, what are variance & standard deviation for females?

c. Using raw score method, what are variance and standard deviation hours watched by males?

Chapter 6

1. Given that the mean change in hours of tv watched by the class = ______and standard deviation = ______.

a. What percentage of the class changed less tv watching than you if you changed 4 hours?

b. What percentage changed more than you if you changed 1 hour”?

c. What percentage of the class changed between -4 & 4 hours?

d. What percentage of the class changed between 1 & 2 hours?

e. If you are at the 60th percentile, how many hours change did you have?

f. The middle 12% of the class changed how many hours?

g. The extreme 5% of the class changed how many hours?

CHAPTER 8

1. What is the correlation between change in hours of tv and weight change?

2. Draw a scatterplot of hours vs weight.

3. What is the correlation between activities you would prefer to do alone versus with someone else?

CHAPTER 9

1. If the mean class height = ______with a standard deviation of ______for n = ______, and the mean change in weight is ______with a standard deviation of ______for n = ______, find the equation for the regression line if initial = X and estimated = Y if r = ______.

2. Plot the regression line.

3. If someone is 68 inches tall how much would you predict they change in weight?

CHAPTER 12

1. If the average height of people in the US population is 68.9 with a standard deviation of 2.6, does the average height (mean = ______) of the class (n = ______) differ significantly? Use  = 0.05.

2. If the average weight change of the US population is 6.8, does the average weight change (mean = ______, SD = ______) of the class (n = ______) differ significantly? Use  = 0.01 2-tailed.

3. What are the 95% confidence limits for the mean weight change of the class?

CHAPTER 13

1. Is there a significant difference in height of males versus females in the class? Use  = 0.05, 1 tailed

2. Calculate omega squared.

CHAPTER 14

1. Is there a significant difference in number hours of tv as a function of year in college? Use  = 0.05

seniorjuniorsophomorefreshman

X

X2

2. Exactly which means differ? Use  = 0.05

3. Calculate omega squared.

CHAPTER 17

1. Is there a significant difference in the number of students who agree or disagree about whether they are excited to take statistics? Use  = 0.01

2. Is there a significant difference between males and females as to whether they would prefer ice cream/cinnabon etc. versus a large green salad? Use  = 0.05