Question 1

The 50th percentile of a distribution is the same as the distribution's median.

Accepted Answer

A) True 
 B)False

Question 2

Percentiles divide a distribution into one hundred equal parts.

Accepted Answer

A) True 
 B)False

Question 3

If Pearson's coefficient of skewness is negative,then the mean is greater than the median.

Accepted Answer

A) True 
 B)False

Question 4

A relationship between gender and preference for Coke or Pepsi can be best represented by a dot plot.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

Both are used to ill

Question 6

The coefficient of skewness is function of the (summed deviations from the mean)raised to the 3rd power.

Accepted Answer

A) True 
 B)False

Question 7

A relationship between gender and preference for Coke or Pepsi can be best represented by a scatter diagram.

Accepted Answer

A) True 
 B)False

Question 8

In a negatively skewed distribution,where is the 1st percentile located? _______________

Accepted Answer

In the far

Question 9

A dot plot is useful for showing the possible outliers.

Accepted Answer

A) True 
 B)False

Question 10

The coefficient of skewness is computed by dividing the standard deviation by the median and multiplying the quotient by 100.

Accepted Answer

A) True 
 B)False

Question 11

Quartiles divide a distribution into four equal parts.

Accepted Answer

A) True 
 B)False

Question 12

A box plot provides the information necessary to compute the Pearson's coefficient of skewness.

Accepted Answer

A) True 
 B)False

Question 13

What is the best way to display the relationship between two variables measured on an interval or ratio level? __________.

Accepted Answer

The answer of What is the best way to display...

Question 14

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

Question 15

A scatter diagram of sales versus production may be constructed by plotting the minimum,first quartile,median,third quartile,and the maximum values of each variable.

Accepted Answer

A) True 
 B)False

Question 16

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 20 hours.   For the distribution of number of sales per hour,50% are greater than ____________.

Accepted Answer

the median

Question 17

For a set of data,how many quartiles are there? _____

Accepted Answer

The answer of For a set of data,how many quartiles...

Question 18

A box plot graphically shows data that are in percentiles.

Accepted Answer

A) True 
 B)False

Question 19

The "box" in a box plot shows the interquartile range.

Accepted Answer

A) True 
 B)False

Question 20

In a box plot,if a value is more than 1.5 times the standard deviation from the first or third quartile,the value is an outlier.

Accepted Answer

A) True 
 B)False

The 50^th percentile of a distribution is the same as the distribution's median.

Percentiles divide a distribution into one hundred equal parts.

If Pearson's coefficient of skewness is negative,then the mean is greater than the median.

A relationship between gender and preference for Coke or Pepsi can be best represented by a dot plot.

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

The coefficient of skewness is function of the (summed deviations from the mean)raised to the 3^rd power.

A relationship between gender and preference for Coke or Pepsi can be best represented by a scatter diagram.

In a negatively skewed distribution,where is the 1^st percentile located? _______________

A dot plot is useful for showing the possible outliers.

The coefficient of skewness is computed by dividing the standard deviation by the median and multiplying the quotient by 100.

Quartiles divide a distribution into four equal parts.

A box plot provides the information necessary to compute the Pearson's coefficient of skewness.

What is the best way to display the relationship between two variables measured on an interval or ratio level? __________.

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

A scatter diagram of sales versus production may be constructed by plotting the minimum,first quartile,median,third quartile,and the maximum values of each variable.

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 20 hours. For the distribution of number of sales per hour,50% are greater than ____________.

For a set of data,how many quartiles are there? _____

A box plot graphically shows data that are in percentiles.

The "box" in a box plot shows the interquartile range.

In a box plot,if a value is more than 1.5 times the standard deviation from the first or third quartile,the value is an outlier.

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

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

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters

Exam 4: Describing Data: Displaying and Exploring Data

The 50th percentile of a distribution is the same as the distribution's median.

Percentiles divide a distribution into one hundred equal parts.

If Pearson's coefficient of skewness is negative,then the mean is greater than the median.

A relationship between gender and preference for Coke or Pepsi can be best represented by a dot plot.

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

The coefficient of skewness is function of the (summed deviations from the mean)raised to the 3rd power.

A relationship between gender and preference for Coke or Pepsi can be best represented by a scatter diagram.

In a negatively skewed distribution,where is the 1st percentile located? _______________

A dot plot is useful for showing the possible outliers.

The coefficient of skewness is computed by dividing the standard deviation by the median and multiplying the quotient by 100.

Quartiles divide a distribution into four equal parts.

A box plot provides the information necessary to compute the Pearson's coefficient of skewness.

What is the best way to display the relationship between two variables measured on an interval or ratio level? __________.

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

A scatter diagram of sales versus production may be constructed by plotting the minimum,first quartile,median,third quartile,and the maximum values of each variable.

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 20 hours. For the distribution of number of sales per hour,50% are greater than ____________.

For a set of data,how many quartiles are there? _____

A box plot graphically shows data that are in percentiles.

The "box" in a box plot shows the interquartile range.

In a box plot,if a value is more than 1.5 times the standard deviation from the first or third quartile,the value is an outlier.

What Is Statistics

Describing Data: Frequency Distributions and Graphic Presentations

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

Linear Regression and Correlation

Multiple Regression and Correlation Analysis

Chi-Square Applications

Filters

The 50^th percentile of a distribution is the same as the distribution's median.

The coefficient of skewness is function of the (summed deviations from the mean)raised to the 3^rd power.

In a negatively skewed distribution,where is the 1^st percentile located? _______________