Question 1

Comparing the consistency between two data sets when their means are very different is best done with the -------.

Accepted Answer

A) z-score 
B) median 
C) standard deviation 
D) coefficient of variation 
A) z-score 
B) median 
C) standard deviation 
D) coefficient of variation D

Question 2

The definition of the pth percentile (where p is any number between 1 and 100)is that at least p
percent of the observations will fall below the value of interest.

Accepted Answer

A) True 
 B)False  True

Question 3

The first quartile represents the-------- percentile of the data set.

Accepted Answer

A) 25th 
B) 10th 
C) 50th 
D) 75th 
A) 25th 
B) 10th 
C) 50th 
D) 75th A

Question 4

The average salary for a sales representative in a medical billing company is $46,600 with a standard deviation of $6,400. The coefficient of variation for salaries at this company is

Accepted Answer

A) 16.4%. 
B) 13.7%. 
C) 9.0%. 
D) 11.7%. 
A) 16.4%. 
B) 13.7%. 
C) 9.0%. 
D) 11.7%.

Question 5

Which one of the following statements is true for a left-skewed distribution?

Accepted Answer

A) The mean is roughly equal to the median. 
B) The mean is less than the median. 
C) The mean is greater than the mode. 
D) The mean is greater than the median. 
A) The mean is roughly equal to the median. 
B) The mean is less than the median. 
C) The mean is greater than the mode. 
D) The mean is greater than the median.

Question 6

When there is an even number of data values, the median is always the middle value in the data set.

Accepted Answer

A) True 
 B)False

Question 7

The -------- is found by first determining the index point, i = 0.5(n), where n is the number of data points.

Accepted Answer

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

Question 8

When working with grouped data, the ---------- is the value in the middle of the class and can be found by taking the average of the endpoints for each class.

Accepted Answer

A) median 
B) midpoint 
C) range 
D) endpoint 
A) median 
B) midpoint 
C) range 
D) endpoint

Question 9

The ------ is the value that appears most often in a data set.

Accepted Answer

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

Question 10

When calculating the sample mean of grouped data, the value represents an estimate of the true sample mean.

Accepted Answer

A) True 
 B)False

Question 11

A random sample of 2008 used cars for sale on the market has an average mileage of 71,420 miles with a sample standard deviation of 9,470 miles. The z-score for a used car with 80,500 miles in this sample is ----------- .

Accepted Answer

A) 0 
B) 0.43 
C) 0.96 
D) - 1.22 
A) 0 
B) 0.43 
C) 0.96 
D) - 1.22

Question 12

Data Analysis ToolPak in Excel can be used to determine the mode for categorical data.

Accepted Answer

A) True 
 B)False

Question 13

Because outliers are extreme values that could distort the analysis, they should always be eliminated from the data set.

Accepted Answer

A) True 
 B)False

Question 14

When you rely on the mean to summarize many data values, you lose important information about the original data.

Accepted Answer

A) True 
 B)False

Question 15

The percentile rank identifies the percentile of a particular value within a set of data.

Accepted Answer

A) True 
 B)False

Question 16

The standard deviation of a data set can never be negative.

Accepted Answer

A) True 
 B)False

Question 17

The average math SAT score for incoming freshman at a particular college is 535 with a standard deviation of 60. The coefficient of variation for SAT scores at this school is

Accepted Answer

A) 11.2%. 
B) 18.0%. 
C) 13.9%. 
D) 15.6%. 
A) 11.2%. 
B) 18.0%. 
C) 13.9%. 
D) 15.6%.

Question 18

The mean of a data set is also known as the average value.

Accepted Answer

A) True 
 B)False

Question 19

A box-and-whisker plot displays the mean of the data set.

Accepted Answer

A) True 
 B)False

Question 20

The sample standard deviation for grouped data provides an exact value for the sample standard deviation.

Accepted Answer

A) True 
 B)False

Comparing the consistency between two data sets when their means are very different is best done with the -------.

The definition of the pth percentile (where p is any number between 1 and 100)is that at least p percent of the observations will fall below the value of interest.

The first quartile represents the-------- percentile of the data set.

The average salary for a sales representative in a medical billing company is $46,600 with a standard deviation of $6,400. The coefficient of variation for salaries at this company is

Which one of the following statements is true for a left-skewed distribution?

When there is an even number of data values, the median is always the middle value in the data set.

The -------- is found by first determining the index point, i = 0.5(n), where n is the number of data points.

When working with grouped data, the ---------- is the value in the middle of the class and can be found by taking the average of the endpoints for each class.

The ------ is the value that appears most often in a data set.

When calculating the sample mean of grouped data, the value represents an estimate of the true sample mean.

A random sample of 2008 used cars for sale on the market has an average mileage of 71,420 miles with a sample standard deviation of 9,470 miles. The z-score for a used car with 80,500 miles in this sample is ----------- .

Data Analysis ToolPak in Excel can be used to determine the mode for categorical data.

Because outliers are extreme values that could distort the analysis, they should always be eliminated from the data set.

When you rely on the mean to summarize many data values, you lose important information about the original data.

The percentile rank identifies the percentile of a particular value within a set of data.

The standard deviation of a data set can never be negative.

The average math SAT score for incoming freshman at a particular college is 535 with a standard deviation of 60. The coefficient of variation for SAT scores at this school is

The mean of a data set is also known as the average value.

A box-and-whisker plot displays the mean of the data set.

The sample standard deviation for grouped data provides an exact value for the sample standard deviation.

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Exam 3: Stress

Comparing the consistency between two data sets when their means are very different is best done with the -------.

The definition of the pth percentile (where p is any number between 1 and 100)is that at least p percent of the observations will fall below the value of interest.

The first quartile represents the-------- percentile of the data set.

The average salary for a sales representative in a medical billing company is $46,600 with a standard deviation of $6,400. The coefficient of variation for salaries at this company is

Which one of the following statements is true for a left-skewed distribution?

When there is an even number of data values, the median is always the middle value in the data set.

The -------- is found by first determining the index point, i = 0.5(n), where n is the number of data points.

When working with grouped data, the ---------- is the value in the middle of the class and can be found by taking the average of the endpoints for each class.

The ------ is the value that appears most often in a data set.

When calculating the sample mean of grouped data, the value represents an estimate of the true sample mean.

A random sample of 2008 used cars for sale on the market has an average mileage of 71,420 miles with a sample standard deviation of 9,470 miles. The z-score for a used car with 80,500 miles in this sample is ----------- .

Data Analysis ToolPak in Excel can be used to determine the mode for categorical data.

Because outliers are extreme values that could distort the analysis, they should always be eliminated from the data set.

When you rely on the mean to summarize many data values, you lose important information about the original data.

The percentile rank identifies the percentile of a particular value within a set of data.

The standard deviation of a data set can never be negative.

The average math SAT score for incoming freshman at a particular college is 535 with a standard deviation of 60. The coefficient of variation for SAT scores at this school is

The mean of a data set is also known as the average value.

A box-and-whisker plot displays the mean of the data set.

The sample standard deviation for grouped data provides an exact value for the sample standard deviation.

Healthy Change

Psychosocial Health

Relationships and Sexuality

Reproductive Choices

Addiction and Drug Abuse

Alcohol and Tobacco

Nutrition

Weight Management and Body Image

Fitness

Cvd, Cancer, and Diabetes

Infectious Conditions

Violence and Unintentional Injuries

Environmental Health

Consumerism and Complementary and Alternative Medicine

Forecasting Techniques and Analysis for Time Series Data

Filters