Question 1

A box plot shows the skewness of a distribution.

Accepted Answer

A) True 
 B)False

Question 2

The range of the coefficient of skewness is ____________.

Accepted Answer

A) Values greater than or equal to zero or always positive 
B) Values less than or equal to zero or always negative 
C) Both positive and negative values 
D) Values between -1 and +1 
A) Values greater than or equal to zero or always positive 
B) Values less than or equal to zero or always negative 
C) Both positive and negative values 
D) Values between -1 and +1

Question 3

A dot plot is useful for showing individual observations.

Accepted Answer

A) True 
 B)False

Question 4

A relationship between two nominal variables is summarized by a contingency table.

Accepted Answer

A) True 
 B)False

Question 5

A dot plot shows the symmetry of a distribution.

Accepted Answer

A) True 
 B)False

Question 6

A dot plot is best applied for a data set with __________.

Accepted Answer

A) 1,000 observations 
B) 50 observations 
C) More than one variable 
D) One mode 
A) 1,000 observations 
B) 50 observations 
C) More than one variable 
D) One mode

Question 7

Given the sample information in the following table regarding public opinion on gun control, who is more likely to favor gun control?

Accepted Answer

Republicans are more likely to

Question 8

A box plot shows ___________.

Accepted Answer

A) The mean and variance 
B) The relative symmetry of a distribution for a set of data 
C) The 10th and 90th percentiles of a distribution 
D) The deciles of a distribution 
A) The mean and variance 
B) The relative symmetry of a distribution for a set of data 
C) The 10th and 90th percentiles of a distribution 
D) The deciles of a distribution

Question 9

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 19 hours.   What is the first quartile for the distribution of number of sales per hour?

Accepted Answer

Q1 = 4 sal

Question 10

The following graph is a

Accepted Answer

A) Dot plot 
B) Stem-and-leaf display 
C) Box plot 
D) Contingency table 
A) Dot plot 
B) Stem-and-leaf display 
C) Box plot 
D) Contingency table

Question 11

The coefficient of skewness is the standard deviation divided by the mean.

Accepted Answer

A) True 
 B)False

Question 12

For the following data, what is the interquartile range?

Accepted Answer

The answer of For the following data, what is the...

Question 13

In a distribution, the second quartile corresponds with the __________.

Accepted Answer

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

Question 14

For the following data, are any of the observations an outlier?

Accepted Answer

The answer of For the following data, are any of...

Question 15

If a distribution is negatively skewed, the distribution is not symmetrical and the long tail is to the left.

Accepted Answer

A) True 
 B)False

Question 16

The ______________ is used to measure the relative symmetry of a distribution.

Accepted Answer

Coefficien

Question 17

The following is an example of a ___________________________.

Accepted Answer

The answer of The following is an example of a...

Question 18

A student scored in the 85th percentile on a standardized test. This means that the student scored lower than 85% of all students who took the test.

Accepted Answer

A) True 
 B)False

Question 19

In a positively skewed distribution, the 50th percentile is the same as the ______________.

Accepted Answer

Question 20

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median typing speed is 73 words per minute. The standard deviation of typing speed is 16.9 words per minute. What is the Pearson coefficient of skewness?

Accepted Answer

A) -2.5 
B) -4.2 
C) +4.2 
D) +2.5 
A) -2.5 
B) -4.2 
C) +4.2 
D) +2.5

A box plot shows the skewness of a distribution.

The range of the coefficient of skewness is ____________.

A dot plot is useful for showing individual observations.

A relationship between two nominal variables is summarized by a contingency table.

A dot plot shows the symmetry of a distribution.

A dot plot is best applied for a data set with __________.

Given the sample information in the following table regarding public opinion on gun control, who is more likely to favor gun control?

A box plot shows ___________.

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 19 hours. What is the first quartile for the distribution of number of sales per hour?

The following graph is a

The coefficient of skewness is the standard deviation divided by the mean.

For the following data, what is the interquartile range?

In a distribution, the second quartile corresponds with the __________.

For the following data, are any of the observations an outlier?

If a distribution is negatively skewed, the distribution is not symmetrical and the long tail is to the left.

The ______________ is used to measure the relative symmetry of a distribution.

The following is an example of a ___________________________.

A student scored in the 85^th percentile on a standardized test. This means that the student scored lower than 85% of all students who took the test.

In a positively skewed distribution, the 50^th percentile is the same as the ______________.

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median typing speed is 73 words per minute. The standard deviation of typing speed is 16.9 words per minute. What is the Pearson coefficient of skewness?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Nonparametric Methods: Goodness-Of-Fit Tests

Filters

Exam 4: Describing Data: Displaying and Exploring Data

A box plot shows the skewness of a distribution.

The range of the coefficient of skewness is ____________.

A dot plot is useful for showing individual observations.

A relationship between two nominal variables is summarized by a contingency table.

A dot plot shows the symmetry of a distribution.

A dot plot is best applied for a data set with __________.

Given the sample information in the following table regarding public opinion on gun control, who is more likely to favor gun control?

A box plot shows ___________.

A telemarketing firm is monitoring the performance of its employees based on the number of sales per hour. One employee had the following sales for the last 19 hours. What is the first quartile for the distribution of number of sales per hour?

The following graph is a

The coefficient of skewness is the standard deviation divided by the mean.

For the following data, what is the interquartile range?

In a distribution, the second quartile corresponds with the __________.

For the following data, are any of the observations an outlier?

If a distribution is negatively skewed, the distribution is not symmetrical and the long tail is to the left.

The ______________ is used to measure the relative symmetry of a distribution.

The following is an example of a ___________________________.

A student scored in the 85th percentile on a standardized test. This means that the student scored lower than 85% of all students who took the test.

In a positively skewed distribution, the 50th percentile is the same as the ______________.

A sample of experienced typists revealed that their mean typing speed is 87 words per minute and the median typing speed is 73 words per minute. The standard deviation of typing speed is 16.9 words per minute. What is the Pearson coefficient of skewness?

What Is Statistics

Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation

Describing Data: Numerical Measures

A Survey of Probability Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Methods and the Central Limit Theorem

Estimation and Confidence Intervals

One-Sample Tests of Hypothesis

Two-Sample Tests of Hypothesis

Analysis of Variance

Correlation and Linear Regression

Multiple Regression Analysis

Nonparametric Methods: Goodness-Of-Fit Tests

Filters

A student scored in the 85^th percentile on a standardized test. This means that the student scored lower than 85% of all students who took the test.

In a positively skewed distribution, the 50^th percentile is the same as the ______________.