Question 1

Which of the following is an impossible value for a percentage?

Accepted Answer

A) 0.0% 
B) 47.458923% 
C) 110.00% 
D) 0.05% 
A) 0.0% 
B) 47.458923% 
C) 110.00% 
D) 0.05%

Question 2

To find the ratio of smokers to non-smokers,you would

Accepted Answer

A) divide the number of non-smokers by the number of smokers. 
B) add them together and divide by the number of smokers. 
C) divide the number of smokers by the number of non-smokers. 
D) multiply the number of smokers by the total number of people. 
A) divide the number of non-smokers by the number of smokers. 
B) add them together and divide by the number of smokers. 
C) divide the number of smokers by the number of non-smokers. 
D) multiply the number of smokers by the total number of people.

Question 3

For a single variable measured at the nominal level,an appropriate graph would be a

Accepted Answer

A) pie chart. 
B) histogram. 
C) frequency polygon. 
D) bivariate table. 
A) pie chart. 
B) histogram. 
C) frequency polygon. 
D) bivariate table.

Question 4

Table 2.1
$\begin{array}{|l|l|l|}
\hline \underline { \text { TABLE 2.1 POLITICAL PARTY }}\
\underline { \text { MEMBERSHIP IN TWO }}\
\underline { \text { COMMUNITIES}}\
 \hline \text { PARTY: } & \text { COMMUNITY A } & \text { COMMUNITY B } \
\hline \text { Republican } & 103 & 17 \
\hline \text { Democrat } & 135 & 21 \
\hline \text { Independent } & 17 & 15 \
\hline \text { Socialist } & \underline 9 & \underline {11} \
\hline \text { TOTALS: } & 264 & 64\
\hline\
\end{array}$
In Table 2.1,what percentage of Democrats lives in community B?

Accepted Answer

A) (21/64)´ 100 = 32.8 
B) (21/328)´ 100 = 6.4 
C) (21/156)´ 100 = 13.5 
D) (64/264)´ 100 = 24.2 
A) (21/64)´ 100 = 32.8 
B) (21/328)´ 100 = 6.4 
C) (21/156)´ 100 = 13.5 
D) (64/264)´ 100 = 24.2

Question 5

Table 2.1
$\begin{array}{|l|l|l|}
\hline \underline { \text { TABLE 2.1 POLITICAL PARTY }}\
\underline { \text { MEMBERSHIP IN TWO }}\
\underline { \text { COMMUNITIES}}\
 \hline \text { PARTY: } & \text { COMMUNITY A } & \text { COMMUNITY B } \
\hline \text { Republican } & 103 & 17 \
\hline \text { Democrat } & 135 & 21 \
\hline \text { Independent } & 17 & 15 \
\hline \text { Socialist } & 9 & 11 \
\hline \text { TOTALS: } & 264 & 64\
\hline\
\end{array}$
In Table 2.1,what is the ratio of Socialists to Democrats in Community B?

Accepted Answer

A) 11:21 
B) 11:64 
C) 64:11 
D) 9:11 
A) 11:21 
B) 11:64 
C) 64:11 
D) 9:11

Question 6

The homicide rate for a city is reported as 23.89.This means that

Accepted Answer

A) for every homicide,there were 23.89 victims. 
B) for every 100,000 people in the population there were 23.89 homicides. 
C) the homicide rate is rising. 
D) there was an average of 23.89 homicides each month. 
A) for every homicide,there were 23.89 victims. 
B) for every 100,000 people in the population there were 23.89 homicides. 
C) the homicide rate is rising. 
D) there was an average of 23.89 homicides each month.

Question 7

A police department reports that the number of reported rapes in their jurisdiction increased by 100% over the past decade.This means that the number of reported rapes today is

Accepted Answer

A) double the number 10 years ago. 
B) actually about the same as 10 years ago. 
C) equal to the number 10 years ago plus 50%. 
D) triple the number 10 years ago. 
A) double the number 10 years ago. 
B) actually about the same as 10 years ago. 
C) equal to the number 10 years ago plus 50%. 
D) triple the number 10 years ago.

Question 8

Pie charts show the frequency distribution of

Accepted Answer

A) one variable. 
B) two variables. 
C) three or more variables. 
D) any of the above 
A) one variable. 
B) two variables. 
C) three or more variables. 
D) any of the above

Question 9

Frequency distributions may be compiled for variables measured at which level?

Accepted Answer

A) nominal 
B) ordinal 
C) interval-ratio 
D) all of the above 
A) nominal 
B) ordinal 
C) interval-ratio 
D) all of the above

Question 10

The sum of the proportions for all categories of a variable will be

Accepted Answer

A) 100.00. 
B) 10.00. 
C) 1.00. 
D) 0.10. 
A) 100.00. 
B) 10.00. 
C) 1.00. 
D) 0.10.

Question 11

A researcher wants to visually display the U.S.divorce rate (a continuous,interval-ratio level variable)for the last 50 years.An appropriate format would be

Accepted Answer

A) a line chart or histogram. 
B) only a histogram would work in this situation. 
C) a pie chart. 
D) None of the above.Data in the form of rate should never be displayed in a chart or graph. 
A) a line chart or histogram. 
B) only a histogram would work in this situation. 
C) a pie chart. 
D) None of the above.Data in the form of rate should never be displayed in a chart or graph.

Question 12

Table 2.1
$\begin{array}{|l|l|l|}
\hline \underline { \text { TABLE 2.1 POLITICAL PARTY }}\
\underline { \text { MEMBERSHIP IN TWO }}\
\underline { \text { COMMUNITIES}}\
 \hline \text { PARTY: } & \text { COMMUNITY A } & \text { COMMUNITY B } \
\hline \text { Republican } & 103 & 17 \
\hline \text { Democrat } & 135 & 21 \
\hline \text { Independent } & 17 & 15 \
\hline \text { Socialist } & \underline 9 & \underline {11} \
\hline \text { TOTALS: } & 264 & 64\
\hline\
\end{array}$
In Table 2.1,which is the correct fraction for determining the proportion of Independents in community B?

Accepted Answer

A) 15/17 
B) 15/264 
C) 64/15 
D) 15/64 
A) 15/17 
B) 15/264 
C) 64/15 
D) 15/64

Question 13

Twenty-three of the 50 states rejected a proposed constitutional amendment to make the house fly the National Insect.What percentage is this?

Accepted Answer

A) 23% 
B) 25% 
C) 46% 
D) 54% 
A) 23% 
B) 25% 
C) 46% 
D) 54%

Question 14

To calculate a proportion,the number of cases in any category (f)is divided by

Accepted Answer

A) the total number of categories (k). 
B) the number of cases in all categories (N). 
C) the cases in that category (f). 
D) the number of cases in adjacent categories (k-1). 
A) the total number of categories (k). 
B) the number of cases in all categories (N). 
C) the cases in that category (f). 
D) the number of cases in adjacent categories (k-1).

Question 15

A frequency distribution should reflect a balance of

Accepted Answer

A) detail and conciseness. 
B) time and money. 
C) questions and answers. 
D) elegance and symmetry. 
A) detail and conciseness. 
B) time and money. 
C) questions and answers. 
D) elegance and symmetry.

Question 16

Table 2.2
$\begin{array}{|l|l|l|}
\hline  
\text {TABLE 2.2 AGES OF}\
\text {RESPONDENTS}\
\hline \text { ClassIntervals } & \text { Frequency } & \text { Percentages } \
\hline 18-23 & 5 & \
\hline 2429 & 21 & \
\hline 30-40 & 10 & \
\hline \text { TOTAL } & 36 & \
\hline\
\end{array}$
A possible problem with Table 2.2 is that

Accepted Answer

A) class intervals overlap. 
B) class intervals are too large. 
C) class intervals are unequal in size. 
D) class intervals are exhaustive. 
A) class intervals overlap. 
B) class intervals are too large. 
C) class intervals are unequal in size. 
D) class intervals are exhaustive.

Question 17

If 60 cases range in score from 4 to 84 and you want 10 intervals in a frequency distribution,approximately what will be the width of each interval?

Accepted Answer

A) 4 
B) 8 
C) 12 
D) 60 
A) 4 
B) 8 
C) 12 
D) 60

Question 18

The midpoints of intervals for frequency distributions constructed with interval-ratio variables are found by

Accepted Answer

A) adding the upper and lower class limits for each interval and then dividing by 2. 
B) multiplying the upper and lower class limits for each interval. 
C) dividing the range by 10. 
D) None of the above.Class intervals for interval-ratio variables do not have midpoints. 
A) adding the upper and lower class limits for each interval and then dividing by 2. 
B) multiplying the upper and lower class limits for each interval. 
C) dividing the range by 10. 
D) None of the above.Class intervals for interval-ratio variables do not have midpoints.

Question 19

A small town of 1,709 residents had one homicide in the past year.The homicide rate for this town

Accepted Answer

A) cannot be determined from the information given. 
B) is (1/1709)´ 100,000. 
C) is rising. 
D) is (1709:1)´ 1,000. 
A) cannot be determined from the information given. 
B) is (1/1709)´ 100,000. 
C) is rising. 
D) is (1709:1)´ 1,000.

Question 20

The purpose of univariate descriptive statistics is to

Accepted Answer

A) summarize relationships between many variables. 
B) display the essential meaning of variables measured at the interval-ratio level. 
C) combine nominal and discrete variables. 
D) summarize a single variable. 
A) summarize relationships between many variables. 
B) display the essential meaning of variables measured at the interval-ratio level. 
C) combine nominal and discrete variables. 
D) summarize a single variable.

Which of the following is an impossible value for a percentage?

To find the ratio of smokers to non-smokers,you would

For a single variable measured at the nominal level,an appropriate graph would be a

Table 2.1 PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist TOTALS: 264 64 In Table 2.1,what percentage of Democrats lives in community B?

Table 2.1 PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist 9 11 TOTALS: 264 64 In Table 2.1,what is the ratio of Socialists to Democrats in Community B?

The homicide rate for a city is reported as 23.89.This means that

A police department reports that the number of reported rapes in their jurisdiction increased by 100% over the past decade.This means that the number of reported rapes today is

Pie charts show the frequency distribution of

Frequency distributions may be compiled for variables measured at which level?

The sum of the proportions for all categories of a variable will be

A researcher wants to visually display the U.S.divorce rate (a continuous,interval-ratio level variable)for the last 50 years.An appropriate format would be

Table 2.1 PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist TOTALS: 264 64 In Table 2.1,which is the correct fraction for determining the proportion of Independents in community B?

Twenty-three of the 50 states rejected a proposed constitutional amendment to make the house fly the National Insect.What percentage is this?

To calculate a proportion,the number of cases in any category (f)is divided by

A frequency distribution should reflect a balance of

Table 2.2 TABLE 2.2 AGES OF RESPONDENTS ClassIntervals Frequency Percentages 18-23 5 2429 21 30-40 10 TOTAL 36 A possible problem with Table 2.2 is that

If 60 cases range in score from 4 to 84 and you want 10 intervals in a frequency distribution,approximately what will be the width of each interval?

The midpoints of intervals for frequency distributions constructed with interval-ratio variables are found by

A small town of 1,709 residents had one homicide in the past year.The homicide rate for this town

The purpose of univariate descriptive statistics is to

Introduction

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics: Sampling and the Sampling Distribution

Estimation Procedures

Hypothesis Testing I: the One-Sample Case

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Hypothesis Testing Iv: Chi Square

Bivariate Association: Introduction and Basic Concepts

Association Between Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 2: Basic Descriptive Statistics: Percentages, Ratios and Rates, Tables, Charts and Graphs

Which of the following is an impossible value for a percentage?

To find the ratio of smokers to non-smokers,you would

For a single variable measured at the nominal level,an appropriate graph would be a

Table 2.1 PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist TOTALS: 264 64 In Table 2.1,what percentage of Democrats lives in community B?

Table 2.1 PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist 9 11 TOTALS: 264 64 In Table 2.1,what is the ratio of Socialists to Democrats in Community B?

The homicide rate for a city is reported as 23.89.This means that

A police department reports that the number of reported rapes in their jurisdiction increased by 100% over the past decade.This means that the number of reported rapes today is

Pie charts show the frequency distribution of

Frequency distributions may be compiled for variables measured at which level?

The sum of the proportions for all categories of a variable will be

A researcher wants to visually display the U.S.divorce rate (a continuous,interval-ratio level variable)for the last 50 years.An appropriate format would be

Table 2.1 PARTY: COMMUNITY A COMMUNITY B Republican 103 17 Democrat 135 21 Independent 17 15 Socialist TOTALS: 264 64 In Table 2.1,which is the correct fraction for determining the proportion of Independents in community B?

Twenty-three of the 50 states rejected a proposed constitutional amendment to make the house fly the National Insect.What percentage is this?

To calculate a proportion,the number of cases in any category (f)is divided by

A frequency distribution should reflect a balance of

Table 2.2 TABLE 2.2 AGES OF RESPONDENTS ClassIntervals Frequency Percentages 18-23 5 2429 21 30-40 10 TOTAL 36 A possible problem with Table 2.2 is that

If 60 cases range in score from 4 to 84 and you want 10 intervals in a frequency distribution,approximately what will be the width of each interval?

The midpoints of intervals for frequency distributions constructed with interval-ratio variables are found by

A small town of 1,709 residents had one homicide in the past year.The homicide rate for this town

The purpose of univariate descriptive statistics is to

Introduction

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics: Sampling and the Sampling Distribution

Estimation Procedures

Hypothesis Testing I: the One-Sample Case

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Hypothesis Testing Iv: Chi Square

Bivariate Association: Introduction and Basic Concepts

Association Between Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters