Question 1

The set of scores 1, 2, 2, 3, 3, 3, 4, 4, 5 forms a distribution.

Accepted Answer

A) nonmodal 
B) unimodal 
C) bimodal 
D) multimodal 
A) nonmodal 
B) unimodal 
C) bimodal 
D) multimodal B

Question 2

When the scores in a distribution are negatively skewed, the mean will have a value.

Accepted Answer

A) higher than the median 
B) equal to the median 
C) either higher or lower than the median, depending on the value of the mode 
D) lower than the median 
A) higher than the median 
B) equal to the median 
C) either higher or lower than the median, depending on the value of the mode 
D) lower than the median D

Question 3

The mode for the scores 0, 0, 1, 1, 1, 2, 2, 3, 3 is.

Accepted Answer

A) 3.0 
B) 1.0 
C) 2.0 
D) 1.5 
A) 3.0 
B) 1.0 
C) 2.0 
D) 1.5 B

Question 4

The is found by calculating

Accepted Answer

A) population mode 
B) population mean 
C) sample mean 
D) population median 
A) population mode 
B) population mean 
C) sample mean 
D) population median

Question 5

Which of the following is most useful for inferential statistics?

Accepted Answer

A) Mode 
B) Median 
C) Percentile 
D) Mean 
A) Mode 
B) Median 
C) Percentile 
D) Mean

Question 6

If a distribution is severely skewed, then which measure of central tendency is preferred?

Accepted Answer

A) Median 
B) Mode 
C) Mean 
D) None is necessarily preferred, because skewness affects each of them equally. 
A) Median 
B) Mode 
C) Mean 
D) None is necessarily preferred, because skewness affects each of them equally.

Question 7

If scores are measured on an ordinal scale, then the best measure of central tendency for the scores is the.

Accepted Answer

A) mode 
B) median 
C) mean 
D) correlation coefficient 
A) mode 
B) median 
C) mean 
D) correlation coefficient

Question 8

The mean salary of a major league baseball player is $1,116,946, whereas the median salary is $481,250. The distribution of salary of major league baseball players is .

Accepted Answer

A) negatively skewed 
B) positively skewed 
C) symmetrical 
D) bimodal 
A) negatively skewed 
B) positively skewed 
C) symmetrical 
D) bimodal

Question 9

The most frequently occurring score in a set of scores is called the.

Accepted Answer

A) mean 
B) median 
C) mode 
D) percentile 
A) mean 
B) median 
C) mode 
D) percentile

Question 10

Consider the series of scores 1, 2, 3, 4, 5, 6, 6. An additional score of 100 in this set would most affect the.

Accepted Answer

A) mean 
B) median 
C) mode 
D) mean, median and mode equally 
A) mean 
B) median 
C) mode 
D) mean, median and mode equally

Question 11

Generally, the mean is the preferred measure of central tendency because it is.

Accepted Answer

A) more stable than the median or the mode 
B) easier to calculate 
C) more useful for inferential statistics 
D) less affected by skewness in the distribution 
A) more stable than the median or the mode 
B) easier to calculate 
C) more useful for inferential statistics 
D) less affected by skewness in the distribution

Question 12

The sum of the deviations about the mean must equal.

Accepted Answer

A) zero 
B) 1.0 
C) -1.0 or +1.0 
D) a value that varies with the number of scores 
A) zero 
B) 1.0 
C) -1.0 or +1.0 
D) a value that varies with the number of scores

Question 13

Consider the series of scores 1, 2, 3, 4, 5, 6, 6. An additional score of 100 in this set would not affect the.

Accepted Answer

A) mean 
B) median 
C) mode 
D) mean, median or mode 
A) mean 
B) median 
C) mode 
D) mean, median or mode

Question 14

Statistics that describe typical scores are referred to as measures of.

Accepted Answer

A) agreement 
B) central tendency 
C) variability 
D) dispersion 
A) agreement 
B) central tendency 
C) variability 
D) dispersion

Question 15

Consider the series of scores 85, 87, 89, 91, 94, 99. An additional score of 46 in this set would most affect the.

Accepted Answer

A) mean 
B) median 
C) mode 
D) mean, median and mode equally 
A) mean 
B) median 
C) mode 
D) mean, median and mode equally

Question 16

The set of scores 1, 2, 2, 2, 2, 3, 4, 5, 6, 6, 6, 6, 7, 8 is.

Accepted Answer

A) nonmodal 
B) unimodal 
C) bimodal 
D) multimodal 
A) nonmodal 
B) unimodal 
C) bimodal 
D) multimodal

Question 17

Which of the following is the measure of the most frequently occurring score in a distribution of scores?

Accepted Answer

A) Arithmetic mean 
B) Sample mean 
C) Median 
D) Mode 
A) Arithmetic mean 
B) Sample mean 
C) Median 
D) Mode

Question 18

The sum of squares for a distribution of scores is given by.

Accepted Answer

A)  $\sum ( X - \bar { X } ) ^ { 2 }$ 
B)  $\sum ( X - \bar { X } )$ 
C)  $\frac { \sum X } { N }$ 
D)  $\sum ( X + \bar { X } ) ^ { 2 }$ 
A)  $\sum ( X - \bar { X } ) ^ { 2 }$ 
B)  $\sum ( X - \bar { X } )$ 
C)  $\frac { \sum X } { N }$ 
D)  $\sum ( X + \bar { X } ) ^ { 2 }$

Question 19

The median for the scores 5, 5, 6, 8, 10, 10, 17 is.

Accepted Answer

A) 10.0 
B) 8.0 
C) 7.0 
D) 6.0 
A) 10.0 
B) 8.0 
C) 7.0 
D) 6.0

Question 20

The mean.

Accepted Answer

A) is the most frequently occurring score in a distribution 
B) is the sum of a set of scores divided by the number of scores summed 
C) is the middle score in a distribution 
D) divides a distribution of scores into two equal parts 
A) is the most frequently occurring score in a distribution 
B) is the sum of a set of scores divided by the number of scores summed 
C) is the middle score in a distribution 
D) divides a distribution of scores into two equal parts

The set of scores 1, 2, 2, 3, 3, 3, 4, 4, 5 forms a distribution.

When the scores in a distribution are negatively skewed, the mean will have a value.

The mode for the scores 0, 0, 1, 1, 1, 2, 2, 3, 3 is.

The is found by calculating

Which of the following is most useful for inferential statistics?

If a distribution is severely skewed, then which measure of central tendency is preferred?

If scores are measured on an ordinal scale, then the best measure of central tendency for the scores is the.

The mean salary of a major league baseball player is $1,116,946, whereas the median salary is $481,250. The distribution of salary of major league baseball players is .

The most frequently occurring score in a set of scores is called the.

Consider the series of scores 1, 2, 3, 4, 5, 6, 6. An additional score of 100 in this set would most affect the.

Generally, the mean is the preferred measure of central tendency because it is.

The sum of the deviations about the mean must equal.

Consider the series of scores 1, 2, 3, 4, 5, 6, 6. An additional score of 100 in this set would not affect the.

Statistics that describe typical scores are referred to as measures of.

Consider the series of scores 85, 87, 89, 91, 94, 99. An additional score of 46 in this set would most affect the.

The set of scores 1, 2, 2, 2, 2, 3, 4, 5, 6, 6, 6, 6, 7, 8 is.

Which of the following is the measure of the most frequently occurring score in a distribution of scores?

The sum of squares for a distribution of scores is given by.

The median for the scores 5, 5, 6, 8, 10, 10, 17 is.

The mean.

Making Sense of Variability: an Introduction to Statistics

Statistics in the Context of Scientific Research

Looking at Data: Frequency Distributions and Graphs

Looking at Data: Measures of Variability

The Normal Distribution, Probability, and Standard Scores

Understanding Data: Using Statistics for Inference and Estimation

Is There Really a Difference Introduction to Statistical Hypothesis Testing

The Basics of Experimentation and Testing for a Difference Between Means

One-Factor Between-Subjects Analysis of Variance

Two-Factor Between-Subjects Analysis of Variance

One-Factor Within-Subjects Analysis of Variance

Correlation: Understanding Covariation

Regression Analysis: Predicting Linear Relationships

Nonparametric Tests

Filters

Exam 4: Looking at Data: Measures of Central Tendency

The set of scores 1, 2, 2, 3, 3, 3, 4, 4, 5 forms a distribution.

When the scores in a distribution are negatively skewed, the mean will have a value.

The mode for the scores 0, 0, 1, 1, 1, 2, 2, 3, 3 is.

The is found by calculating

Which of the following is most useful for inferential statistics?

If a distribution is severely skewed, then which measure of central tendency is preferred?

If scores are measured on an ordinal scale, then the best measure of central tendency for the scores is the.

The mean salary of a major league baseball player is $1,116,946, whereas the median salary is $481,250. The distribution of salary of major league baseball players is .

The most frequently occurring score in a set of scores is called the.

Consider the series of scores 1, 2, 3, 4, 5, 6, 6. An additional score of 100 in this set would most affect the.

Generally, the mean is the preferred measure of central tendency because it is.

The sum of the deviations about the mean must equal.

Consider the series of scores 1, 2, 3, 4, 5, 6, 6. An additional score of 100 in this set would not affect the.

Statistics that describe typical scores are referred to as measures of.

Consider the series of scores 85, 87, 89, 91, 94, 99. An additional score of 46 in this set would most affect the.

The set of scores 1, 2, 2, 2, 2, 3, 4, 5, 6, 6, 6, 6, 7, 8 is.

Which of the following is the measure of the most frequently occurring score in a distribution of scores?

The sum of squares for a distribution of scores is given by.

The median for the scores 5, 5, 6, 8, 10, 10, 17 is.

The mean.

Making Sense of Variability: an Introduction to Statistics

Statistics in the Context of Scientific Research

Looking at Data: Frequency Distributions and Graphs

Looking at Data: Measures of Variability

The Normal Distribution, Probability, and Standard Scores

Understanding Data: Using Statistics for Inference and Estimation

Is There Really a Difference Introduction to Statistical Hypothesis Testing

The Basics of Experimentation and Testing for a Difference Between Means

One-Factor Between-Subjects Analysis of Variance

Two-Factor Between-Subjects Analysis of Variance

One-Factor Within-Subjects Analysis of Variance

Correlation: Understanding Covariation

Regression Analysis: Predicting Linear Relationships

Nonparametric Tests

Filters