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1. Identify the answer choice that is an

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1 1. Identify the answer choice that is an
example of a discrete quantitative variable. a) The number of people to complete a 5K run. b) The time to complete a 5K run. c) The weight of each participant in a 5K run. d) The amount of each participants exertion (high, medium, low) in a 5K run. e) The types of running shoes worn in a 5K run. Copyright © 2013 Pearson Education, Inc.

2 1. Identify the answer choice that is an
example of a discrete quantitative variable. a) The number of people to complete a 5K run. b) The time to complete a 5K run. c) The weight of each participant in a 5K run. d) The amount of each participants exertion (high, medium, low) in a 5K run. e) The types of running shoes worn in a 5K run. Copyright © 2013 Pearson Education, Inc.

3 2. Identify the answer choice that is an
example of a continuous quantitative variable. a) The year a car was manufactured. b) The country in which the car was manufactured. c) The number of cylinders the cars engine has (4,6,8…). d) The time it takes the car to reach 60 mph from a dead stop. e) The color of the car. Copyright © 2013 Pearson Education, Inc.

4 2. Identify the answer choice that is an
example of a continuous quantitative variable. a) The year a car was manufactured. b) The country in which the car was manufactured. c) The number of cylinders the cars engine has (4,6,8…). d) The time it takes the car to reach 60 mph from a dead stop. e) The color of the car. Copyright © 2013 Pearson Education, Inc.

5 a) Parameter = 67% Statistic = 67%
3. In 2006 the GSS survey asked 2,815 participants if they were in favor or opposed to the death penalty for those convicted of murder and 67% of those surveyed stated that they were in favor of the death penalty. What is the parameter and the statistic? a) Parameter = 67% Statistic = 67% b) Parameter = 67% Statistic = unknown c) Parameter = unknown Statistic = 67% d) Parameter = unknown Statistic = unknown Copyright © 2013 Pearson Education, Inc.

6 a) Parameter = 67% Statistic = 67%
3. In 2006 the GSS survey asked 2,815 participants if they were in favor or opposed to the death penalty for those convicted of murder and 67% of those surveyed stated that they were in favor of the death penalty. What is the parameter and the statistic? a) Parameter = 67% Statistic = 67% b) Parameter = 67% Statistic = unknown c) Parameter = unknown Statistic = 67% d) Parameter = unknown Statistic = unknown Copyright © 2013 Pearson Education, Inc.

7 4. Suppose that you took a sample of three people and asked
them how much they spent on lunch and whether they had a vegetarian lunch or not. Which of the following is the correct way to create a data matrix? Jane Jo Juan y n n Jane Jo Juan 10 8 y n b) c) Name Amount Spent on Lunch Vegetarian or not Jane 10 y Jo 8 n Juan Copyright © 2013 Pearson Education, Inc.

8 4. Suppose that you took a sample of three people and asked
them how much they spent on lunch and whether they had a vegetarian lunch or not. Which of the following is the correct way to create a data matrix? Jane Jo Juan y n n Jane Jo Juan 10 8 y n b) c) Name Amount Spent on Lunch Vegetarian or not Jane 10 y Jo 8 n Juan Copyright © 2013 Pearson Education, Inc.

9 b) All adults in the United States c) All adults in the world
1. The General Social Survey (GSS) asks questions to a sample of Americans to determine their opinions about a wide range of topics every other year. In 2006 the GSS survey asked 2,815 participants if they were in favor or opposed to the death penalty for those convicted of murder. What is the sample? a) The 2,815 participants b) All adults in the United States c) All adults in the world Copyright © 2013 Pearson Education, Inc.

10 b) All adults in the United States c) All adults in the world
1. General Social Survey (GSS) asks questions to a sample of Americans to determine their opinions about a wide range of topics every other year. In 2006 the GSS survey asked 2,815 participants if they were in favor or opposed to the death penalty for those convicted of murder. What is the sample? a) The 2,815 participants b) All adults in the United States c) All adults in the world Copyright © 2013 Pearson Education, Inc.

11 a) Observational study b) Experiment
2. A scientist was interested in determining if Prilosec or Nexium helped relieve acid reflux symptoms faster. He assigned 30 patients to take Prilosec and 30 patients to take Nexium. Each patient had to keep a diary and record the symptoms they experienced. Is this an observational study or an experiment? a) Observational study b) Experiment Copyright © 2013 Pearson Education, Inc.

12 a) Observational study b) Experiment
2. A scientist was interested in determining if Prilosec or Nexium helped relieve acid reflux symptoms faster. He assigned 30 patients to take Prilosec and 30 patients to take Nexium. Each patient had to keep a diary and record the symptoms they experienced. Is this an observational study or an experiment? a) Observational study b) Experiment Copyright © 2013 Pearson Education, Inc.

13 b) Occurrence of cancer c) Heredity d) Amount of fish consumed
3. A nutrition student was interested in determining if eating fish twice a week or more helped reduce someone’s risk of cancer. He randomly selected 2,000 Americans and called them on the phone. He asked about their eating habits and their health history. What is the explanatory variable? a) 2,000 Americans b) Occurrence of cancer c) Heredity d) Amount of fish consumed Copyright © 2013 Pearson Education, Inc.

14 b) Occurrence of cancer c) Heredity d) Amount of fish consumed
3. A nutrition student was interested in determining if eating fish twice a week or more helped reduce someone’s risk of cancer. He randomly selected 2,000 Americans and called them on the phone. He asked about their eating habits and their health history. What is the explanatory variable? a) 2,000 Americans b) Occurrence of cancer c) Heredity d) Amount of fish consumed Copyright © 2013 Pearson Education, Inc.

15 a) Simple Random Sampling b) Cluster Sampling
5. A university administrator wants to conduct a survey to examine textbook costs. The university has eight colleges (business, liberal arts, engineering, etc.) so the administrator randomly samples 100 students from each college. This is an example of what type of sampling method? a) Simple Random Sampling b) Cluster Sampling c) Stratified Random Sampling Copyright © 2013 Pearson Education, Inc.

16 a) Simple Random Sampling b) Cluster Sampling
5. A university administrator wants to conduct a survey to examine textbook costs. The university has eight colleges (business, liberal arts, engineering, etc.) so the administrator randomly samples 100 students from each college. This is an example of what type of sampling method? a) Simple Random Sampling b) Cluster Sampling c) Stratified Random Sampling Copyright © 2013 Pearson Education, Inc.

17 b) Placebo and vitamin C c) Three hundred people d) General health
6. A researcher wanted to know if vitamin C had a protective effect against illness. Three hundred people were randomly divided into two groups: one group got a placebo and the other group got vitamin C. The number of sick days was recorded for each person. What is the explanatory variable? a) Number of sick days b) Placebo and vitamin C c) Three hundred people d) General health Copyright © 2013 Pearson Education, Inc.

18 b) Placebo and vitamin C c) Three hundred people d) General health
6. A researcher wanted to know if vitamin C had a protective effect against illness. Three hundred people were randomly divided into two groups: one group got a placebo and the other group got vitamin C. The number of sick days was recorded for each person. What is the explanatory variable? a) Number of sick days b) Placebo and vitamin C c) Three hundred people d) General health Copyright © 2013 Pearson Education, Inc.

19 1. Identify the list which contains only categorical variables?
a) Month of birth, age, favorite color b) Month of birth, height, weight c) Marital status, major in school, HIV status d) Marital status, height, favorite color e) HIV status, marital status, GPA Copyright © 2013 Pearson Education, Inc.

20 1. Identify the list which contains only categorical variables?
a) Month of birth, age, favorite color b) Month of birth, height, weight c) Marital status, major in school, HIV status d) Marital status, height, favorite color e) HIV status, marital status, GPA Copyright © 2013 Pearson Education, Inc.

21 2. In 2006 the GSS asked, “How often do you
read a traditional newspaper?” (i.e. one that is printed with ink on paper and NOT counting what you read online). The answers are displayed in the table below. What is the mode? a) Every Day b) A few times a week c) Once a week d) Less than once a week e) Never Copyright © 2013 Pearson Education, Inc.

22 2. In 2006 the GSS asked, “How often do you
read a traditional newspaper?” (i.e. one that is printed with ink on paper and NOT counting what you read online). The answers are displayed in the table below. What is the mode? a) Every Day b) A few times a week c) Once a week d) Less than once a week e) Never Copyright © 2013 Pearson Education, Inc.

23 3. In 2002 the GSS asked, “How important is it
for a person to be considered an adult for them to be no longer living in their parents’ household?”. The responses are listed in the table below. Approximately how many participants were asked this question? a) 5 b) 500 c) 1000 d) 1300 e) 1500 Copyright © 2013 Pearson Education, Inc.

24 3. In 2002 the GSS asked, “How important is it
for a person to be considered an adult for them to be no longer living in their parents’ household?”. The responses are listed in the table below. Approximately how many participants were asked this question? a) 5 b) 500 c) 1000 d) 1300 e) 1500 Copyright © 2013 Pearson Education, Inc.

25 4. Below is a contingency table of the results of two
questions asked during the 2006 GSS. Participants were asked if gun control should be stricter after the 9/11/01 tragedy and about their political party affiliation. Find the proportion of Democrats that think gun control laws should be stricter. Should be stricter Should be less strict Total Democrat 454 62 516 Independent 195 37 232 Republican 363 104 467 1012 203 1215 a) 454 / 516 b) 454 / 1012 c) 454 / 1215 d) 1012 / 1215 e) 516 / 1215 Copyright © 2013 Pearson Education, Inc.

26 4. Below is a contingency table of the results of two
questions asked during the 2006 GSS. Participants were asked if gun control should be stricter after the 9/11/01 tragedy and about their political party affiliation. Find the proportion of Democrats that think gun control laws should be stricter. Should be stricter Should be less strict Total Democrat 454 62 516 Independent 195 37 232 Republican 363 104 467 1012 203 1215 a) 454 / 516 b) 454 / 1012 c) 454 / 1215 d) 1012 / 1215 e) 516 / 1215 Copyright © 2013 Pearson Education, Inc.

27 5. Below is a contingency table of the results of two
questions asked during the 2006 GSS. Participants were asked if gun control should be stricter after the 9/11/01 tragedy and about their political party affiliation. What percentage of those surveyed think that gun control laws should be stricter? Should be stricter Should be less strict Total Democrat 454 62 516 Independent 195 37 232 Republican 363 104 467 1012 203 1215 a) 77% b) 83% c) 84% d) 88% e) 90% Copyright © 2013 Pearson Education, Inc.

28 5. Below is a contingency table of the results of two
questions asked during the 2006 GSS. Participants were asked if gun control should be stricter after the 9/11/01 tragedy and about their political party affiliation. What percentage of those surveyed think that gun control laws should be stricter? Should be stricter Should be less strict Total Democrat 454 62 516 Independent 195 37 232 Republican 363 104 467 1012 203 1215 a) 77% b) 83% c) 84% d) 88% e) 90% Copyright © 2013 Pearson Education, Inc.

29 1. What can be said about the relationship
between the mean and median in the dotplot below? a) The mean is smaller than the median. b) The mean is bigger than the median. c) The mean is equal to the median. d) Nothing can be determined based on the graph. Copyright © 2013 Pearson Education, Inc.

30 1. What can be said about the relationship
between the mean and median in the dotplot below? a) The mean is smaller than the median. b) The mean is bigger than the median. c) The mean is equal to the median. d) Nothing can be determined based on the graph. Copyright © 2013 Pearson Education, Inc.

31 2. An investor was interested in determining
how much gain she had in her 401K plan in the last 6 quarters. The data is listed below. Find the median and the mean of the data. a) Mean = Median = 670 b) Mean = Median = 1565 c) Mean = Median = 3.5 d) Mean = Median = 670 e) Mean = Median = 1565 Copyright © 2013 Pearson Education, Inc.

32 2. An investor was interested in determining
how much gain she had in her 401K plan in the last 6 quarters. The data is listed below. Find the median and the mean of the data. a) Mean = Median = 670 b) Mean = Median = 1565 c) Mean = Median = 3.5 d) Mean = Median = 670 e) Mean = Median = 1565 Copyright © 2013 Pearson Education, Inc.

33 3. In 2004 one of the questions on the GSS
survey asked respondents, “To how many service clubs do you belong?” Find the median from the data listed in the table below. a) 0 organizations b) 1 organization c) 2 organizations d) 3 organizations e) Cannot be determined No. of Organizations Frequency 1 organization 111 2 organizations 14 3 organizations 4 organizations 3 7 or more organizations 1 Copyright © 2013 Pearson Education, Inc.

34 3. In 2004 one of the questions on the GSS
survey asked respondents, “To how many service clubs do you belong?” Find the median from the data listed in the table below. a) 0 organizations b) 1 organization c) 2 organizations d) 3 organizations e) Cannot be determined No. of Organizations Frequency 1 organization 111 2 organizations 14 3 organizations 4 organizations 3 7 or more organizations 1 Copyright © 2013 Pearson Education, Inc.

35 4. Which data set below would have a larger standard deviation?
a) Data Set A b) Data Set B c) Data Set C d) The standard deviation is the same for all three data sets. e) Cannot be determined Copyright © 2013 Pearson Education, Inc.

36 4. Which data set below would have a larger standard deviation?
a) Data Set A b) Data Set B c) Data Set C d) The standard deviation is the same for all three data sets. e) Cannot be determined Copyright © 2013 Pearson Education, Inc.

37 5. A personal trainer was interested in studying the effects of different types of diets (liquid diet, prepared meals, and low carb) on total weight loss in two months. Which boxplot has the biggest IQR? a) Liquid Diet b) Prepared Meals c) Low Carb d) They are the same e) Cannot be determined Copyright © 2013 Pearson Education, Inc.

38 5. A personal trainer was interested in studying the effects of different types of diets (liquid diet, prepared meals, and low carb) on total weight loss in two months. Which boxplot has the biggest IQR? a) Liquid Diet b) Prepared Meals c) Low Carb d) They are the same e) Cannot be determined Copyright © 2013 Pearson Education, Inc.

39 6. What type of graphic would you use to
explore the association between two quantitative variables? a) Contingency Table b) Side-by-Side Boxplots c) Scatterplots d) All of the above Copyright © 2013 Pearson Education, Inc.

40 6. What type of graphic would you use to
explore the association between two quantitative variables? a) Contingency Table b) Side-by-Side Boxplots c) Scatterplots d) All of the above Copyright © 2013 Pearson Education, Inc.

41 7. The scatterplot below shows a graph of median
family incomes per state as determined by the US Census for 1969 versus In general, what can be said about the straight line association between the variables? a) Strong, negative b) Strong, positive c) Weak, negative d) Weak, positive Copyright © 2013 Pearson Education, Inc.

42 7. The scatterplot below shows a graph of median
family incomes per state as determined by the US Census for 1969 versus In general, what can be said about the straight line association between the variables? a) Strong, negative b) Strong, positive c) Weak, negative d) Weak, positive Copyright © 2013 Pearson Education, Inc.

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