Question 1

For the following set of data [5 9 5 5 2 4], the mean is

Accepted Answer

A)  4 
B)  4.5 
C)  5 
D)  6 
A)  4 
B)  4.5 
C)  5 
D)  6 C

Question 2

For the following data set [1, 9, 9, 9, 11, 28], which of the following is false?

Accepted Answer

A)  The mode is 9. 
B)  The median is 9. 
C)  The mean is 9. 
D)  The median location is 3.5. 
A)  The mode is 9. 
B)  The median is 9. 
C)  The mean is 9. 
D)  The median location is 3.5. C

Question 3

For the data set [1, 3, 3, 5, 5, 5, 7, 7, 9], the value "5" is

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 D

Question 4

If a physics professor gave her class the same exam every year, which of the following measures of exam scores would probably stay the most consistent in value from year to year?

Accepted Answer

A)  mode 
B)  mean 
C)  median 
D)  none of the above 
A)  mode 
B)  mean 
C)  median 
D)  none of the above

Question 5

The mode of the numbers 1 3 4 5 6 6 7 8 9 9 9 is

Accepted Answer

A)  6 
B)  6.5 
C)  6.1 
D)  9 
A)  6 
B)  6.5 
C)  6.1 
D)  9

Question 6

Alison received a score of 480 on the verbal portion of her SAT. If she scored at the 50th percentile, her score represents the _______ of the distribution of all verbal SAT scores.

Accepted Answer

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

Question 7

For the following data set [1, 7, 9, 15, 33, 76, 103, 118], what is the median location?

Accepted Answer

A)  5 
B)  4.5 
C)  33 
D)  24 
A)  5 
B)  4.5 
C)  33 
D)  24

Question 8

Given the numbers 6 7 9 11 15 71 86, how many numbers fall below the median?

Accepted Answer

A)  3 
B)  11 
C)  6 to 86 
D)  6, 7, 9, and 11 
A)  3 
B)  11 
C)  6 to 86 
D)  6, 7, 9, and 11

Question 9

The following are test grades from the first statistics exam. Briefly describe the data, including each of the 3 measures of central tendency. 
45            50            65            65            70            70            75            80            85            90            95            100

Accepted Answer

Twelve students completed the

Question 10

The mean is the number that corresponds to the point at or below which 50% of the scores fall when the data is arranged in numerical order.

Accepted Answer

A) True 
 B)False

Question 11

The mean is more influenced by extreme scores than other measures of central tendency.

Accepted Answer

A) True 
 B)False

Question 12

On a histogram, which always refers to the highest point on the distribution?

Accepted Answer

A)  mean 
B)  median 
C)  mode 
D)  none of the above 
A)  mean 
B)  median 
C)  mode 
D)  none of the above

Question 13

Which of the following is true of the value "9" in the following data set [1, 1, 1, 7, 9, 12, 15, 65, 100]?

Accepted Answer

A)  It is the mode. 
B)  It is the mean. 
C)  It is the 50th percentile. 
D)  It is equal to (N+1)/2. 
A)  It is the mode. 
B)  It is the mean. 
C)  It is the 50th percentile. 
D)  It is equal to (N+1)/2.

Question 14

Which of the following statements about the mode is false?

Accepted Answer

A)  It must be an actual score that occurred in the data set. 
B)  It can consist of more than one number. 
C)  It can be calculated algebraically. 
D)  All of the above are false. 
A)  It must be an actual score that occurred in the data set. 
B)  It can consist of more than one number. 
C)  It can be calculated algebraically. 
D)  All of the above are false.

Question 15

Which of the following is NOT a disadvantage of the mean?

Accepted Answer

A)  It is unduly influenced by extreme scores. 
B)  Its value many not actually exist in the data. 
C)  It is least stable from sample to sample. 
D)  Its interpretation in terms of variables requires some faith in the interval properties of the data. 
A)  It is unduly influenced by extreme scores. 
B)  Its value many not actually exist in the data. 
C)  It is least stable from sample to sample. 
D)  Its interpretation in terms of variables requires some faith in the interval properties of the data.

Question 16

In using ordinal data, which measure of central tendency is probably least useful?

Accepted Answer

A)  mode 
B)  mean 
C)  median 
D)  You cannot use any measure of central tendency with ordinal data. 
A)  mode 
B)  mean 
C)  median 
D)  You cannot use any measure of central tendency with ordinal data.

Question 17

When the median falls between two numbers, the lower number is used.

Accepted Answer

A) True 
 B)False

Question 18

If we were interested in studying salaries in the National Basketball Association, the least useful measure of the typical salary would be

Accepted Answer

A)  the median. 
B)  the mode. 
C)  the range. 
D)  the mean. 
A)  the median. 
B)  the mode. 
C)  the range. 
D)  the mean.

Question 19

We are most likely to randomly pick which score from an actual data set?

Accepted Answer

A)  the mode 
B)  the median 
C)  the highest score 
D)  the lowest score 
A)  the mode 
B)  the median 
C)  the highest score 
D)  the lowest score

Question 20

is the symbol commonly used for the

Accepted Answer

A)  mean. 
B)  mode. 
C)  median. 
D)  none of the above 
A)  mean. 
B)  mode. 
C)  median. 
D)  none of the above

Exam 4: Measures of Central Tendency

For the following set of data [5 9 5 5 2 4], the mean is

For the following data set [1, 9, 9, 9, 11, 28], which of the following is false?

For the data set [1, 3, 3, 5, 5, 5, 7, 7, 9], the value "5" is

If a physics professor gave her class the same exam every year, which of the following measures of exam scores would probably stay the most consistent in value from year to year?

The mode of the numbers 1 3 4 5 6 6 7 8 9 9 9 is

Alison received a score of 480 on the verbal portion of her SAT. If she scored at the 50th percentile, her score represents the _______ of the distribution of all verbal SAT scores.

For the following data set [1, 7, 9, 15, 33, 76, 103, 118], what is the median location?

Given the numbers 6 7 9 11 15 71 86, how many numbers fall below the median?

The following are test grades from the first statistics exam. Briefly describe the data, including each of the 3 measures of central tendency. 45 50 65 65 70 70 75 80 85 90 95 100

The mean is the number that corresponds to the point at or below which 50% of the scores fall when the data is arranged in numerical order.

The mean is more influenced by extreme scores than other measures of central tendency.

On a histogram, which always refers to the highest point on the distribution?

Which of the following is true of the value "9" in the following data set [1, 1, 1, 7, 9, 12, 15, 65, 100]?

Which of the following statements about the mode is false?

Which of the following is NOT a disadvantage of the mean?

In using ordinal data, which measure of central tendency is probably least useful?

When the median falls between two numbers, the lower number is used.

If we were interested in studying salaries in the National Basketball Association, the least useful measure of the typical salary would be

We are most likely to randomly pick which score from an actual data set?

is the symbol commonly used for the

Introduction

Basic Concepts

Displaying Data

Measures of Variability

The Normal Distribution

Basic Concepts of Probability

Sampling Distributions and Hypothesis Testing

Correlation

Regression

Multiple Regression

Hypothesis Tests Applied to Means: One Sample

Hypothesis Tests Applied to Means: Two Related Samples

Hypothesis Tests Applied to Means: Two Independent Samples

Power

One-Way Analysis of Variance

Factorial Analysis of Variance

Repeated-Measures Analysis of Variance

Chi-Square

Nonparametric and Resampling Statistical Tests

Meta-Analysis

Filters

Alison received a score of 480 on the verbal portion of her SAT. If she scored at the 50^th percentile, her score represents the _______ of the distribution of all verbal SAT scores.