Question 1

A dot plot is an easy way to represent the relationship between two variables.

Accepted Answer

A) True 
 B)False

Question 2

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% of the observations are between __________ and _________.

Accepted Answer

The answer of A telemarketing firm is monitoring the performance...

Question 3

In a symmetric distribution,where is the 99th percentile located? _______________

Accepted Answer

In the far

Question 4

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

Accepted Answer

A scatter diagram requires int

Question 5

A dot plot is useful for showing the mode of a distribution.

Accepted Answer

A) True 
 B)False

Question 6

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 7

The following is an example of ____________________________

Accepted Answer

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

Question 8

A student scored in the 65th percentile on a standardized test.This means that the student scored higher than 65% of all students who took the test.

Accepted Answer

A) True 
 B)False

Question 9

Negatively skewed indicates that a distribution is not symmetrical.The long tail is to the left.

Accepted Answer

A) True 
 B)False

Question 10

A dot plot shows the quartiles of a distribution.

Accepted Answer

A) True 
 B)False

Question 11

In a negatively skewed distribution,the mean is smaller than the median or mode and the mode occurs at the peak of the curve.

Accepted Answer

A) True 
 B)False

Question 12

The interquartile range is the difference between the values of the first and third quartile,indicating the range of the middle fifty percent of the observations.

Accepted Answer

A) True 
 B)False

Question 13

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

Accepted Answer

A) True 
 B)False

Question 14

What statistics are needed to draw a box plot?

Accepted Answer

A) Minimum,maximum,median,first and third quartiles. 
B) Median,mean and standard deviation. 
C) A median and an interquartile range. 
D) A mean and a standard deviation. 
A) Minimum,maximum,median,first and third quartiles. 
B) Median,mean and standard deviation. 
C) A median and an interquartile range. 
D) A mean and a standard deviation.

Question 15

A scatter diagram is useful for quickly graphing frequencies in a small data set.

Accepted Answer

A) True 
 B)False

Question 16

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 17

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 18

A dot plot and a scatter diagram are different names for the same graph.

Accepted Answer

A) True 
 B)False

Question 19

Quartiles are another way to describe the dispersion of a distribution.

Accepted Answer

A) True 
 B)False

Question 20

A box plot shows the range of values that correspond to the upper 25% of the distribution.

Accepted Answer

A) True 
 B)False

A dot plot is an easy way to represent the relationship between two variables.

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% of the observations are between __ and _.

In a symmetric distribution,where is the 99^th percentile located? _______________

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

A dot plot is useful for showing the mode of a distribution.

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.

The following is an example of ____________________________

A student scored in the 65^th percentile on a standardized test.This means that the student scored higher than 65% of all students who took the test.

Negatively skewed indicates that a distribution is not symmetrical.The long tail is to the left.

A dot plot shows the quartiles of a distribution.

In a negatively skewed distribution,the mean is smaller than the median or mode and the mode occurs at the peak of the curve.

The interquartile range is the difference between the values of the first and third quartile,indicating the range of the middle fifty percent of the observations.

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

What statistics are needed to draw a box plot?

A scatter diagram is useful for quickly graphing frequencies in a small data set.

In a scatter diagram,we describe the relationship between

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 and a scatter diagram are different names for the same graph.

Quartiles are another way to describe the dispersion of a distribution.

A box plot shows the range of values that correspond to the upper 25% of the distribution.

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

A dot plot is an easy way to represent the relationship between two variables.

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% of the observations are between __________ and _________.

In a symmetric distribution,where is the 99th percentile located? _______________

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

A dot plot is useful for showing the mode of a distribution.

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.

The following is an example of ____________________________

A student scored in the 65th percentile on a standardized test.This means that the student scored higher than 65% of all students who took the test.

Negatively skewed indicates that a distribution is not symmetrical.The long tail is to the left.

A dot plot shows the quartiles of a distribution.

In a negatively skewed distribution,the mean is smaller than the median or mode and the mode occurs at the peak of the curve.

The interquartile range is the difference between the values of the first and third quartile,indicating the range of the middle fifty percent of the observations.

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

What statistics are needed to draw a box plot?

A scatter diagram is useful for quickly graphing frequencies in a small data set.

In a scatter diagram,we describe the relationship between

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 and a scatter diagram are different names for the same graph.

Quartiles are another way to describe the dispersion of a distribution.

A box plot shows the range of values that correspond to the upper 25% of the distribution.

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

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% of the observations are between __ and _.

In a symmetric distribution,where is the 99^th percentile located? _______________

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.

A student scored in the 65^th percentile on a standardized test.This means that the student scored higher than 65% of all students who took the test.