Question 1

If the coefficient of skewness is equal to zero, the shape of the distribution is __________.

Accepted Answer

A) Negatively skewed 
B) Symmetric 
C) Positively skewed 
D) Unknown 
A) Negatively skewed 
B) Symmetric 
C) Positively skewed 
D) Unknown

Question 2

For the following data, find the information required to construct a box plot.

Accepted Answer

Minimum = 9; 1^st quart

Question 3

For the following data, what is the interquartile range?

Accepted Answer

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

Question 4

A scatter diagram of sales versus production is labeled with sales on the Y-axis and production on the X-axis.

Accepted Answer

A) True 
 B)False

Question 5

The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?

Accepted Answer

A) 111 
B) 37 
C) 74 
D) 75% 
A) 111 
B) 37 
C) 74 
D) 75%

Question 6

A dot plot is useful for showing the range of the data.

Accepted Answer

A) True 
 B)False

Question 7

Outliers are clearly presented in 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 8

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 third quartile for the distribution of number of sales per hour?

Accepted Answer

Q3 = 7 sal

Question 9

A scatter diagram is used to illustrate a relationship between gender and the preference for Coke or Pepsi.

Accepted Answer

A) True 
 B)False

Question 10

If the mean of a distribution is smaller than the median and mode, the sign of Pearson's coefficient of skewness is ______________.

Accepted Answer

The answer of If the mean of a distribution is...

Question 11

In a scatter diagram, we describe the relationship between __________.

Accepted Answer

A) Two variables measured at the ordinal level 
B) Two variables, one measured as an ordinal variable and the other as a ratio variable 
C) Two variables measured at the interval or ratio level 
D) A variable measure on the interval or ratio level and time 
A) Two variables measured at the ordinal level 
B) Two variables, one measured as an ordinal variable and the other as a ratio variable 
C) Two variables measured at the interval or ratio level 
D) A variable measure on the interval or ratio level and time

Question 12

What is the difference between a scatter diagram and a contingency table?

Accepted Answer

A scatter diagram requires int

Question 13

What is the possible range of values for Pearson's coefficient of skewness?

Accepted Answer

A) -1 and +1 
B) -3 and +3 
C) 0% and 100% 
D) Unlimited values 
A) -1 and +1 
B) -3 and +3 
C) 0% and 100% 
D) Unlimited values

Question 14

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 median for the distribution of number of sales per hour?

Accepted Answer

Mean = 5.3

Question 15

A sample of the homes currently offered for sale revealed that the mean asking price is $75,900, the median $70,100, and the modal price is $67,200. The standard deviation of the distribution is $5,900. What is Pearson's coefficient of skewness in this sample?

Accepted Answer

The answer of A sample of the homes currently offered...

Question 16

What is the common purpose of a dot plot and a box plot?

Accepted Answer

Both are used to ill

Question 17

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

Accepted Answer

Yes, 1 is an outlier

Question 18

A box plot graphically shows the 10th and 90th percentiles.

Accepted Answer

A) True 
 B)False

Question 19

Given the sample information in the following table regarding public opinion on gun control, what percent of Democrats have no opinion?

Accepted Answer

The answer of Given the sample information in the following...

Question 20

The following graph illustrates _______________.

Accepted Answer

A) A positive or direct relationship 
B) A negative or inverse relationship 
C) No relationship 
D) A distribution for a single variable 
A) A positive or direct relationship 
B) A negative or inverse relationship 
C) No relationship 
D) A distribution for a single variable

If the coefficient of skewness is equal to zero, the shape of the distribution is __________.

For the following data, find the information required to construct a box plot.

For the following data, what is the interquartile range?

A scatter diagram of sales versus production is labeled with sales on the Y-axis and production on the X-axis.

The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?

A dot plot is useful for showing the range of the data.

Outliers are clearly presented in a _____________.

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 third quartile for the distribution of number of sales per hour?

A scatter diagram is used to illustrate a relationship between gender and the preference for Coke or Pepsi.

If the mean of a distribution is smaller than the median and mode, the sign of Pearson's coefficient of skewness is ______________.

In a scatter diagram, we describe the relationship between __________.

What is the difference between a scatter diagram and a contingency table?

What is the possible range of values for Pearson's coefficient of skewness?

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 median for the distribution of number of sales per hour?

A sample of the homes currently offered for sale revealed that the mean asking price is $75,900, the median $70,100, and the modal price is $67,200. The standard deviation of the distribution is $5,900. What is Pearson's coefficient of skewness in this sample?

What is the common purpose of a dot plot and a box plot?

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

A box plot graphically shows the 10^th and 90^th percentiles.

Given the sample information in the following table regarding public opinion on gun control, what percent of Democrats have no opinion?

The following graph illustrates _______________.

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

If the coefficient of skewness is equal to zero, the shape of the distribution is __________.

For the following data, find the information required to construct a box plot.

For the following data, what is the interquartile range?

A scatter diagram of sales versus production is labeled with sales on the Y-axis and production on the X-axis.

The test scores for a class of 147 students are computed. What is the location of the test score associated with the third quartile?

A dot plot is useful for showing the range of the data.

Outliers are clearly presented in a _____________.

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 third quartile for the distribution of number of sales per hour?

A scatter diagram is used to illustrate a relationship between gender and the preference for Coke or Pepsi.

If the mean of a distribution is smaller than the median and mode, the sign of Pearson's coefficient of skewness is ______________.

In a scatter diagram, we describe the relationship between __________.

What is the difference between a scatter diagram and a contingency table?

What is the possible range of values for Pearson's coefficient of skewness?

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 median for the distribution of number of sales per hour?

A sample of the homes currently offered for sale revealed that the mean asking price is $75,900, the median $70,100, and the modal price is $67,200. The standard deviation of the distribution is $5,900. What is Pearson's coefficient of skewness in this sample?

What is the common purpose of a dot plot and a box plot?

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

A box plot graphically shows the 10th and 90th percentiles.

Given the sample information in the following table regarding public opinion on gun control, what percent of Democrats have no opinion?

The following graph illustrates _______________.

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 box plot graphically shows the 10^th and 90^th percentiles.