Question 1

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

Question 2

A _____ is the number of times a phenomenon occurs divided by the total possible occurrences.

Accepted Answer

A)  rate 
B)  frequency distribution 
C)  ratio 
D)  histogram 
A)  rate 
B)  frequency distribution 
C)  ratio 
D)  histogram A

Question 3

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

Accepted Answer

A)  Nominal 
B)  Ordinal 
C)  Interval-ratio 
D)  All of the answer choices. 
A)  Nominal 
B)  Ordinal 
C)  Interval-ratio 
D)  All of the answer choices. D

Question 4

Forty of every two hundred students attend all of their classes. What percentage of the student body is this?

Accepted Answer

A)  5% 
B)  50% 
C)  2% 
D)  20% 
A)  5% 
B)  50% 
C)  2% 
D)  20%

Question 5

-If we added a cumulative percentage column to Table 2.2 and began our calculations with the 18-23 interval, the entry in the 30-40 interval would be________.

Accepted Answer

A)  10% 
B)  33.3% 
C)  37% 
D)  100% 
A)  10% 
B)  33.3% 
C)  37% 
D)  100%

Question 6

Cumulative frequencies and cumulative percentages allow a researcher to________.

Accepted Answer

A)  be sure the column totals are correct. 
B)  tell at a glance how many cases fall above or below a given category. 
C)  show the accuracy of his or her findings. 
D)  All of the answer choices. 
A)  be sure the column totals are correct. 
B)  tell at a glance how many cases fall above or below a given category. 
C)  show the accuracy of his or her findings. 
D)  All of the answer choices.

Question 7

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 8

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 9

For a single variable at the interval-ratio level, an appropriate graph would be________.

Accepted Answer

A)  a pie chart. 
B)  a histogram. 
C)  a bivariate table. 
D)  None of the answer choices. Graphs are never used for interval-ratio level variables. 
A)  a pie chart. 
B)  a histogram. 
C)  a bivariate table. 
D)  None of the answer choices. Graphs are never used for interval-ratio level variables.

Question 10

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. 
C)  a pie chart. 
D)  None of the answer choices. 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. 
C)  a pie chart. 
D)  None of the answer choices. Data in the form of rate should never be displayed in a chart or graph.

Question 11

The frequency distribution below displays the distribution of age for a sample drawn from a community. Finish the table by completing the columns for percentages, and cumulative percentages.

Accepted Answer

The answer of The frequency distribution below displays the distribution...

Question 12

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 13

When constructing frequency distributions for variables measured at the interval-ratio level, approximate interval size (or interval width) can be found by________.

Accepted Answer

A)  dividing sample size (N) by 10. 
B)  multiplying the number of categories by the lowest score. 
C)  dividing the range by the sample size (N). 
D)  dividing the range (R) by the number of categories (k). 
A)  dividing sample size (N) by 10. 
B)  multiplying the number of categories by the lowest score. 
C)  dividing the range by the sample size (N). 
D)  dividing the range (R) by the number of categories (k).

Question 14

-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 15

If class intervals overlap with one another, there will be issues of________.

Accepted Answer

A)  categories not being exhaustive. 
B)  categories not being mutually exclusive. 
C)  categories being of unequal size. 
D)  All of these choices are correct. 
A)  categories not being exhaustive. 
B)  categories not being mutually exclusive. 
C)  categories being of unequal size. 
D)  All of these choices are correct.

Question 16

A city of 1567 people had 34 auto thefts last year. The auto theft rate for this city________.

Accepted Answer

A)  cannot be determined from the information given. 
B)  is falling. 
C)  is (34/1567) x 100,000. 
D)  is (100,000 x 1567)/34. 
A)  cannot be determined from the information given. 
B)  is falling. 
C)  is (34/1567) x 100,000. 
D)  is (100,000 x 1567)/34.

Question 17

When examining a single categorical variable with emphasis on the differences between two or more categories, it is best to use a________.

Accepted Answer

A)  bar chart. 
B)  histogram. 
C)  line chart. 
D)  None of these choices are correct. 
A)  bar chart. 
B)  histogram. 
C)  line chart. 
D)  None of these choices are correct.

Question 18

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 19

The class intervals below represent ages of respondents. Which set of intervals is both exhaustive and mutually exclusive?

Accepted Answer

A)  18-19, 19-20, 20-21 
B)  18-19, 20-21, 22-23 
C)  18-20, 22-24, 26-28 
D)  18-19, 21-22, 24-25 
A)  18-19, 19-20, 20-21 
B)  18-19, 20-21, 22-23 
C)  18-20, 22-24, 26-28 
D)  18-19, 21-22, 24-25

Question 20

Proportions and percentages, ratios and rates are all ways of expressing________.

Accepted Answer

A)  concise distributions of a variable. 
B)  data without leaving out any details. 
C)  relative frequencies. 
D)  raw frequencies. 
A)  concise distributions of a variable. 
B)  data without leaving out any details. 
C)  relative frequencies. 
D)  raw frequencies.

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

A _____ is the number of times a phenomenon occurs divided by the total possible occurrences.

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

Forty of every two hundred students attend all of their classes. What percentage of the student body is this?

-If we added a cumulative percentage column to Table 2.2 and began our calculations with the 18-23 interval, the entry in the 30-40 interval would be________.

Cumulative frequencies and cumulative percentages allow a researcher to________.

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

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

For a single variable at the interval-ratio level, an appropriate graph would 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________.

The frequency distribution below displays the distribution of age for a sample drawn from a community. Finish the table by completing the columns for percentages, and cumulative percentages.

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

When constructing frequency distributions for variables measured at the interval-ratio level, approximate interval size (or interval width) can be found by________.

-A possible problem with Table 2.2 is that________.

If class intervals overlap with one another, there will be issues of________.

A city of 1567 people had 34 auto thefts last year. The auto theft rate for this city________.

When examining a single categorical variable with emphasis on the differences between two or more categories, it is best to use a________.

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 class intervals below represent ages of respondents. Which set of intervals is both exhaustive and mutually exclusive?

Proportions and percentages, ratios and rates are all ways of expressing________.

Introduction

Measures of Central Tendency

Measures of Variation

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 for Nominal and Ordinal Level Variables

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 Tables Percentages Rates and Ratios and Graphs

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

A _____ is the number of times a phenomenon occurs divided by the total possible occurrences.

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

Forty of every two hundred students attend all of their classes. What percentage of the student body is this?

-If we added a cumulative percentage column to Table 2.2 and began our calculations with the 18-23 interval, the entry in the 30-40 interval would be________.

Cumulative frequencies and cumulative percentages allow a researcher to________.

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

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

For a single variable at the interval-ratio level, an appropriate graph would 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________.

The frequency distribution below displays the distribution of age for a sample drawn from a community. Finish the table by completing the columns for percentages, and cumulative percentages.

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

When constructing frequency distributions for variables measured at the interval-ratio level, approximate interval size (or interval width) can be found by________.

-A possible problem with Table 2.2 is that________.

If class intervals overlap with one another, there will be issues of________.

A city of 1567 people had 34 auto thefts last year. The auto theft rate for this city________.

When examining a single categorical variable with emphasis on the differences between two or more categories, it is best to use a________.

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 class intervals below represent ages of respondents. Which set of intervals is both exhaustive and mutually exclusive?

Proportions and percentages, ratios and rates are all ways of expressing________.

Introduction

Measures of Central Tendency

Measures of Variation

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 for Nominal and Ordinal Level Variables

Association Between Variables Measured at the Interval Ratio Level

Elaborating Bivariate Tables

Partial Correlation and Multiple Regression and Correlation

Filters