Question 1

Which measure of central tendency specifies the score value with the highest frequency?

Accepted Answer

A)  mode 
B)  median 
C)  mean 
D)  standard deviation 
A)  mode 
B)  median 
C)  mean 
D)  standard deviation A

Question 2

The value of the mean will change in response to

Accepted Answer

A)  adding another score to the data set. 
B)  removing a score from the data set. 
C)  changing the value of a score from the data set. 
D)  all of the above. 
A)  adding another score to the data set. 
B)  removing a score from the data set. 
C)  changing the value of a score from the data set. 
D)  all of the above. D

Question 3

If you know that the mean of a distribution is 50 and that the mode is 25, you also know that the distribution is

Accepted Answer

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

Question 4

Use the counting method to determine the median for the following set of scores: 36, 42, 23, 54, 28, 34, 18

Accepted Answer

Odd number of scores

Question 5

Measures of central tendency

Accepted Answer

A)  indicate how much the scores vary from one another. 
B)  describe the most typical score in an entire distribution. 
C)  indicate the most frequently occurring score in a distribution of scores. 
D)  all of the above are true. 
A)  indicate how much the scores vary from one another. 
B)  describe the most typical score in an entire distribution. 
C)  indicate the most frequently occurring score in a distribution of scores. 
D)  all of the above are true.

Question 6

In a skewed distribution, the location of the ______________ will be towards the tail of the distribution in the direction of the extreme scores.

Accepted Answer

A)  mean 
B)  median 
C)  mode 
D)  standard deviation 
A)  mean 
B)  median 
C)  mode 
D)  standard deviation

Question 7

If you are working with a grouped frequency distribution, the mode would be

Accepted Answer

A)  the class interval with the greatest frequency. 
B)  the beginning value of the class interval with the greatest frequency. 
C)  the upper limit of the class interval with the greatest frequency. 
D)  the mid-point of the class interval with the greatest frequency. 
A)  the class interval with the greatest frequency. 
B)  the beginning value of the class interval with the greatest frequency. 
C)  the upper limit of the class interval with the greatest frequency. 
D)  the mid-point of the class interval with the greatest frequency.

Question 8

To determine which measure of central tendency to use, we need to identify

Accepted Answer

A)  the independent variable(s) and dependent variable. 
B)  the shape of the distribution and the scale of measurement. 
C)  the extraneous variables. 
D)  the standard deviation. 
A)  the independent variable(s) and dependent variable. 
B)  the shape of the distribution and the scale of measurement. 
C)  the extraneous variables. 
D)  the standard deviation.

Question 9

If you are working with scores from an actual population, the number of scores would be symbolized by ______ and the mean would be symbolized as _______.

Accepted Answer

A)  N; M 
B)  N; μ 
C)  n; M 
D)  n; μ 
A)  N; M 
B)  N; μ 
C)  n; M 
D)  n; μ

Question 10

What is the median for the following set of scores: 2, 4, 2, 8, 4, 2, 5, 3?

Accepted Answer

A)  2 
B)  3.5 
C)  4 
D)  8 
A)  2 
B)  3.5 
C)  4 
D)  8

Question 11

A researcher using the amount of time to complete a task should use which measure of central tendency?

Accepted Answer

A)  the mean if the distribution is skewed 
B)  the median if the scores are normally distributed 
C)  the mean if the distribution is symmetrical 
D)  the mode if the distribution is skewed 
A)  the mean if the distribution is skewed 
B)  the median if the scores are normally distributed 
C)  the mean if the distribution is symmetrical 
D)  the mode if the distribution is skewed

Question 12

Which of the following statements is NOT true of the sample mean?

Accepted Answer

A)  It is an unbiased estimate of the population mean. 
B)  It takes every score value into consideration. 
C)  It is a biased estimate of the population mean. 
D)  It can be used for further statistical operations. 
A)  It is an unbiased estimate of the population mean. 
B)  It takes every score value into consideration. 
C)  It is a biased estimate of the population mean. 
D)  It can be used for further statistical operations.

Question 13

What is the mode for the following set of scores: 6, 8, 2, 6, 7, 9, 6?

Accepted Answer

A)  9 
B)  7 
C)  6.5 
D)  6 
A)  9 
B)  7 
C)  6.5 
D)  6

Question 14

In a set of scores, at least one person will have a score that is equal to

Accepted Answer

A)  the mode. 
B)  the median. 
C)  the mean. 
D)  all of the above. 
A)  the mode. 
B)  the median. 
C)  the mean. 
D)  all of the above.

Question 15

Given the following distribution table:
 $\begin{array}{rr}
\underline {X }&\underline {f}\
10 & 2 \
9 & 3 \
8 & 6 \
7 & 3 \
6 & 1
\end{array}$ a. What is the mode?
b. What is the mean?

Accepted Answer

a. Mode =

Question 16

All of the following are true of the mode, except that it

Accepted Answer

A)  ignores all other scores. 
B)  lacks stability. 
C)  is the frequency of the highest score. 
D)  can change dramatically if one score changes. 
A)  ignores all other scores. 
B)  lacks stability. 
C)  is the frequency of the highest score. 
D)  can change dramatically if one score changes.

Question 17

If you are calculating the mean for scores that have been arranged into a simple frequency distribution, what additional step has to be taken?

Accepted Answer

A)  ∑fX 
B)  ∑f 
C)  ∑cf 
D)  ∑N 
A)  ∑fX 
B)  ∑f 
C)  ∑cf 
D)  ∑N

Question 18

Using the formula method, find the median for the following distribution of scores:
 $\begin{array}{cr}
\underline{\text { CI } }& \underline{f} \
95-99 & 9 \
90-94 & 8 \
85-89 & 10 \
80-84 & 10 \
75-79 & 13 \
70-74 & 17 \
65-69 & 16 \
60-64 & 14 \
55-59 & 9 \
50-54 & 6 \
45-49 & 7 \
40-44 & 4 \
35-39 & 5 \
30-34 & 2
\end{array}$

Accepted Answer

None

Question 19

Why is the mode problematic as a measure of central tendency?

Accepted Answer

The mode is problematic as a measure of

Question 20

What is the mean for the following set of scores: 5, 10, 10, 15, 5?

Accepted Answer

A)  9 
B)  10 
C)  15 
D)  5 
A)  9 
B)  10 
C)  15 
D)  5

Which measure of central tendency specifies the score value with the highest frequency?

The value of the mean will change in response to

If you know that the mean of a distribution is 50 and that the mode is 25, you also know that the distribution is

Use the counting method to determine the median for the following set of scores: 36, 42, 23, 54, 28, 34, 18

Measures of central tendency

In a skewed distribution, the location of the ______________ will be towards the tail of the distribution in the direction of the extreme scores.

If you are working with a grouped frequency distribution, the mode would be

To determine which measure of central tendency to use, we need to identify

If you are working with scores from an actual population, the number of scores would be symbolized by and the mean would be symbolized as _.

What is the median for the following set of scores: 2, 4, 2, 8, 4, 2, 5, 3?

A researcher using the amount of time to complete a task should use which measure of central tendency?

Which of the following statements is NOT true of the sample mean?

What is the mode for the following set of scores: 6, 8, 2, 6, 7, 9, 6?

In a set of scores, at least one person will have a score that is equal to

Given the following distribution table: 10 2 9 3 8 6 7 3 6 1 a. What is the mode? b. What is the mean?

All of the following are true of the mode, except that it

If you are calculating the mean for scores that have been arranged into a simple frequency distribution, what additional step has to be taken?

Using the formula method, find the median for the following distribution of scores: 95-99 9 90-94 8 85-89 10 80-84 10 75-79 13 70-74 17 65-69 16 60-64 14 55-59 9 50-54 6 45-49 7 40-44 4 35-39 5 30-34 2

Why is the mode problematic as a measure of central tendency?

What is the mean for the following set of scores: 5, 10, 10, 15, 5?

Organizing Data Using Tables and Graphs

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

Exam 3: Measures of Central Tendency

Which measure of central tendency specifies the score value with the highest frequency?

The value of the mean will change in response to

If you know that the mean of a distribution is 50 and that the mode is 25, you also know that the distribution is

Use the counting method to determine the median for the following set of scores: 36, 42, 23, 54, 28, 34, 18

Measures of central tendency

In a skewed distribution, the location of the ______________ will be towards the tail of the distribution in the direction of the extreme scores.

If you are working with a grouped frequency distribution, the mode would be

To determine which measure of central tendency to use, we need to identify

If you are working with scores from an actual population, the number of scores would be symbolized by ______ and the mean would be symbolized as _______.

What is the median for the following set of scores: 2, 4, 2, 8, 4, 2, 5, 3?

A researcher using the amount of time to complete a task should use which measure of central tendency?

Which of the following statements is NOT true of the sample mean?

What is the mode for the following set of scores: 6, 8, 2, 6, 7, 9, 6?

In a set of scores, at least one person will have a score that is equal to

Given the following distribution table: 10 2 9 3 8 6 7 3 6 1 a. What is the mode? b. What is the mean?

All of the following are true of the mode, except that it

If you are calculating the mean for scores that have been arranged into a simple frequency distribution, what additional step has to be taken?

Using the formula method, find the median for the following distribution of scores: 95-99 9 90-94 8 85-89 10 80-84 10 75-79 13 70-74 17 65-69 16 60-64 14 55-59 9 50-54 6 45-49 7 40-44 4 35-39 5 30-34 2

Why is the mode problematic as a measure of central tendency?

What is the mean for the following set of scores: 5, 10, 10, 15, 5?

Organizing Data Using Tables and Graphs

Measures of Variability

Z-Scores and Other Standard Scores

Probability and the Normal Distribution

Sampling Distribution of Means

Hypothesis Testing

One-Sample T-Test

Two-Sample T-Test: Independent Samples Design

Two-Sample T-Test: Related Samples Design

Confidence Interval Versus Point Estimation

One-Way Analysis of Variance

Factorial Analysis of Variance

Correlation and Regression

Chi-Square

Introduction to Statistics

Nonparametric Statistics for Ordinal Data

Filters

If you are working with scores from an actual population, the number of scores would be symbolized by and the mean would be symbolized as _.