Question 1

The ratio of men to women in a karate class is 3.3:1. If there are 100 women, how many men are there?

Accepted Answer

A)  33 
B)  66 
C)  133 
D)  330 
A)  33 
B)  66 
C)  133 
D)  330

Question 2

If we added a cumulative percentage column to Table 1 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 3

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

Question 4

A class has 20 men and 10 women. The ratio of women to men is

Accepted Answer

A)  2 to 1 
B)  1 to 2 
C)  20% 
D)  .2 
A)  2 to 1 
B)  1 to 2 
C)  20% 
D)  .2

Question 5

Open-ended intervals

Accepted Answer

A)  are always preferable to unequal intervals 
B)  should never be used in actual research 
C)  can be useful when there are a few very high or very low scores in a distribution 
D)  should only be used with ordinal-level variables 
A)  are always preferable to unequal intervals 
B)  should never be used in actual research 
C)  can be useful when there are a few very high or very low scores in a distribution 
D)  should only be used with ordinal-level variables

Question 6

The class intervals below represent ages of young adult 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 7

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 above 
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 above

Question 8

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

Question 9

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 10

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 11

City A (population = 1567 people) had 34 auto thefts last year. City B (population = 34,567) had 40 auto thefts in the same time period and City C (population = 156,980) had 70 auto thefts. Which city had the highest RATE of auto theft?

Accepted Answer

A)  City A 
B)  City B 
C)  City C 
D)  More information is needed to answer this question. 
A)  City A 
B)  City B 
C)  City C 
D)  More information is needed to answer this question.

Question 12

As a very general rule, frequency distributions should have ___ categories.

Accepted Answer

A)  less than 5 
B)  more than 20 
C)  no more than 5 
D)  about 10 
A)  less than 5 
B)  more than 20 
C)  no more than 5 
D)  about 10

Question 13

-A possible problem with Table 1 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 14

According to the text book, the rate of traffic fatalities in the United States

Accepted Answer

A)  fell between 1994 and 2011 
B)  rose dramatically between 1994 and 2011 
C)  rose between 1980 and 2000 and then fell 
D)  fell between 1980 and 2000 and then rose 
A)  fell between 1994 and 2011 
B)  rose dramatically between 1994 and 2011 
C)  rose between 1980 and 2000 and then fell 
D)  fell between 1980 and 2000 and then rose

Question 15

-In Table 2, what percentage of Community A are Republicans?

Accepted Answer

A)  (103/264) x 100 = 39.02 
B)  (103/17) x 100 = 605.88 
C)  (264/328) x 100 = 80.49 
D)  (103/135) x 100 = 76.30 
A)  (103/264) x 100 = 39.02 
B)  (103/17) x 100 = 605.88 
C)  (264/328) x 100 = 80.49 
D)  (103/135) x 100 = 76.30

Question 16

-In Table 1, what is the ratio of 30-40 year olds to 18-23 year olds?

Accepted Answer

A)  0.24:1.00 
B)  4.20:1.00 
C)  2.00:1.00 
D)  1.00:1.00 
A)  0.24:1.00 
B)  4.20:1.00 
C)  2.00:1.00 
D)  1.00:1.00

Question 17

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 18

-In Table 2, what percentage of Democrats lives in community B?

Accepted Answer

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

Question 19

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 20

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%

The ratio of men to women in a karate class is 3.3:1. If there are 100 women, how many men are there?

If we added a cumulative percentage column to Table 1 and began our calculations with the 18-23 interval, the entry in the 30-40 interval would be

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

A class has 20 men and 10 women. The ratio of women to men is

Open-ended intervals

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

Cumulative frequencies and cumulative percentages allow a researcher to

Proportions and percentages, ratios and rates are all ways of expressing

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

A frequency distribution should reflect a balance of

City A (population = 1567 people) had 34 auto thefts last year. City B (population = 34,567) had 40 auto thefts in the same time period and City C (population = 156,980) had 70 auto thefts. Which city had the highest RATE of auto theft?

As a very general rule, frequency distributions should have ___ categories.

-A possible problem with Table 1 is that

According to the text book, the rate of traffic fatalities in the United States

-In Table 2, what percentage of Community A are Republicans?

-In Table 1, what is the ratio of 30-40 year olds to 18-23 year olds?

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

-In Table 2, what percentage of Democrats lives in community B?

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

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

Introduction

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics Sampling the Sampling Distribution

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

Partial Correlation and

Filters

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

The ratio of men to women in a karate class is 3.3:1. If there are 100 women, how many men are there?

If we added a cumulative percentage column to Table 1 and began our calculations with the 18-23 interval, the entry in the 30-40 interval would be

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

A class has 20 men and 10 women. The ratio of women to men is

Open-ended intervals

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

Cumulative frequencies and cumulative percentages allow a researcher to

Proportions and percentages, ratios and rates are all ways of expressing

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

A frequency distribution should reflect a balance of

City A (population = 1567 people) had 34 auto thefts last year. City B (population = 34,567) had 40 auto thefts in the same time period and City C (population = 156,980) had 70 auto thefts. Which city had the highest RATE of auto theft?

As a very general rule, frequency distributions should have ___ categories.

-A possible problem with Table 1 is that

According to the text book, the rate of traffic fatalities in the United States

-In Table 2, what percentage of Community A are Republicans?

-In Table 1, what is the ratio of 30-40 year olds to 18-23 year olds?

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

-In Table 2, what percentage of Democrats lives in community B?

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

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

Introduction

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction to Inferential Statistics Sampling the Sampling Distribution

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

Partial Correlation and

Filters