Question 1

The presence of outliers suggests what about the shape of a variable's distribution?

Accepted Answer

A)  It is normal 
B)  It is skewed 
C)  It is unimodal 
D)  It is bimodal 
E)  It is multimodal

Question 2

John is using GSS data in order to conduct his study so that he doesn't have to collect his own data. He will most likely be conducting:

Accepted Answer

A)  Secondary data analysis 
B)  Data cleaning 
C)  Qualitative data analysis 
D)  Primary data analysis 
E)  None of the above

Question 3

Chi square is an inferential statistic.

Accepted Answer

A) True 
 B)False

Question 4

In a normal curve, about what percent of all cases falls within plus or minus two standard deviations?

Accepted Answer

A)  10% 
B)  25% 
C)  50% 
D)  68% 
E)  95%

Question 5

Which summary statistic should be used for nominal variables?

Accepted Answer

A)  Range 
B)  Variance 
C)  Mean 
D)  Median 
E)  Mode

Question 6

The process of checking data for errors after the data has been entered in a computer file is called error cleansing.

Accepted Answer

A) True 
 B)False

Question 7

In the following distribution of the variable semesters completed, which is the range: 4, 3, 1, 0, 3, 3, 4, 0, 3, 2?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 8

Standard deviation is defined as the square root of the variance.

Accepted Answer

A) True 
 B)False

Question 9

What is the purpose of using statistics in social science? What are the advantages and disadvantages of relying on statistics?

Accepted Answer

The answer of What is the purpose of using statistics...

Question 10

Means are affected by skewness, while medians are not.

Accepted Answer

A) True 
 B)False

Question 11

The diagram below is a

Accepted Answer

A)  Mean 
B)  Mode 
C)  Bar chart 
D)  Frequency polygon 
E)  Histogram

Question 12

In the following distribution of the variable semesters completed, which is closest to the mean: 4, 3, 1, 0, 3, 3, 4, 0, 3, 2?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 13

When a researcher has a distribution in which two nonadjacent categories have about the same number of cases, this is referred to as a:

Accepted Answer

A)  Mean 
B)  Bimodal 
C)  Binomial 
D)  Unimodal 
E)  Frequency

Question 14

What does statistical significance mean with regard to the association between two variables?

Accepted Answer

A)  Association is likely to be due to chance. 
B)  Association is not likely to be due to chance. 
C)  Association is likely to be due to a third variable. 
D)  Association is not likely to be due to a third variable. 
E)  Association exists and is deemed to be strong.

Question 15

A frequency polygon contains solid bars separated by spaces.

Accepted Answer

A) True 
 B)False

Question 16

The process of checking data carefully for errors is known as:

Accepted Answer

A)  Data reduction 
B)  Data cleaning 
C)  Data dredging 
D)  Data definition 
E)  Data analysis

Question 17

Which of the following would best illustrate marital status in a diagram as explained in the text?

Accepted Answer

A)  Histogram 
B)  Frequency polygon 
C)  Box plot 
D)  Bar chart 
E)  Pie chart

Question 18

In which of the following can you control for an extraneous variable?

Accepted Answer

A)  Bar chart 
B)  Frequency distribution 
C)  Frequency polygon 
D)  Elaboration analysis 
E)  Crosstabulation

Question 19

Histograms are used to display the distribution of quantitative variables that vary along a continuum.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not a measure of variation?

Accepted Answer

A)  Range 
B)  Mean 
C)  Standard deviation 
D)  Variance 
E)  Normal distribution

Exam 8: Elementary Quantitative Data Analysis

The presence of outliers suggests what about the shape of a variable's distribution?

John is using GSS data in order to conduct his study so that he doesn't have to collect his own data. He will most likely be conducting:

Chi square is an inferential statistic.

In a normal curve, about what percent of all cases falls within plus or minus two standard deviations?

Which summary statistic should be used for nominal variables?

The process of checking data for errors after the data has been entered in a computer file is called error cleansing.

In the following distribution of the variable semesters completed, which is the range: 4, 3, 1, 0, 3, 3, 4, 0, 3, 2?

Standard deviation is defined as the square root of the variance.

What is the purpose of using statistics in social science? What are the advantages and disadvantages of relying on statistics?

Means are affected by skewness, while medians are not.

The diagram below is a

In the following distribution of the variable semesters completed, which is closest to the mean: 4, 3, 1, 0, 3, 3, 4, 0, 3, 2?

When a researcher has a distribution in which two nonadjacent categories have about the same number of cases, this is referred to as a:

What does statistical significance mean with regard to the association between two variables?

A frequency polygon contains solid bars separated by spaces.

The process of checking data carefully for errors is known as:

Which of the following would best illustrate marital status in a diagram as explained in the text?

In which of the following can you control for an extraneous variable?

Histograms are used to display the distribution of quantitative variables that vary along a continuum.

Which of the following is not a measure of variation?