Question 1

The descriptive measure that is not measured in the same units as the original data is the

Accepted Answer

A) median 
B) standard deviation 
C) mode 
D) variance 
A) median 
B) standard deviation 
C) mode 
D) variance

Question 2

Ron Butler, a custom home builder, is looking over the expenses he incurred for a house he just completed constructing. For the purpose of pricing future construction projects, he would like to know the average wage ($/hour) he paid the workers he employed. Listed below are the categories of worker he employed, along with their respective wage and total hours worked. What is the average wage ($/hour) he paid the workers?

Accepted Answer

The answer of Ron Butler, a custom home builder, is...

Question 3

Excel's __________ function can be used to compute the mode.

Accepted Answer

A) MAX 
B) AVERAGE 
C) MEDIAN 
D) MODE.SNGL 
A) MAX 
B) AVERAGE 
C) MEDIAN 
D) MODE.SNGL

Question 4

In computing descriptive statistics from grouped data,

Accepted Answer

A) data values are treated as if they occur at the midpoint of a class 
B) the grouped data result is more accurate than the ungrouped result 
C) the grouped data computations are used only when a population is being analyzed 
D) All of these answers are correct. 
A) data values are treated as if they occur at the midpoint of a class 
B) the grouped data result is more accurate than the ungrouped result 
C) the grouped data computations are used only when a population is being analyzed 
D) All of these answers are correct.

Question 5

The annual part-time earnings of a sample of college students are given below.  
A)Compute the mean.
B)Compute the variance.
C)Compute the standard deviation.
D)Compute the coefficient of variation.

Accepted Answer

A.23.7
b.4

Question 6

The __________ denotes the number of standard deviations xi is from the mean   .

Accepted Answer

A) range 
B) median 
C) z-score 
D) third quartile 
A) range 
B) median 
C) z-score 
D) third quartile

Question 7

An important numerical measure of the shape of a distribution is the

Accepted Answer

A) correlation coefficient 
B) variance 
C) skewness 
D) relative location 
A) correlation coefficient 
B) variance 
C) skewness 
D) relative location

Question 8

Exhibit 3-2
A researcher has collected the following sample data. The mean of the sample is 5.
  
-Refer to Exhibit 3-2. The coefficient of variation is

Accepted Answer

A) 72.66% 
B) 81.24% 
C) 264% 
D) 330% 
A) 72.66% 
B) 81.24% 
C) 264% 
D) 330%

Question 9

A numerical measure of linear association between two variables is the

Accepted Answer

A) variance 
B) z-score 
C) correlation coefficient 
D) None of the other answers are correct. 
A) variance 
B) z-score 
C) correlation coefficient 
D) None of the other answers are correct.

Question 10

Exhibit 3-3
Suppose annual salaries for sales associates from a particular store have a bell-shaped distribution with a mean of $32,500 and a standard deviation of $2,500.
-Refer to Exhibit 3-3. The z-score for a sales associate from this store who earns $37,500 is

Accepted Answer

A) 37.5 
B) 2 
C) -2 
D) 0.92 
A) 37.5 
B) 2 
C) -2 
D) 0.92

Question 11

__________ can be used to determine the percentage of data values that must be within one, two, and three standard deviations of the mean for data having a bell-shaped distribution.

Accepted Answer

A) Chebyshev's theorem 
B) empirical rule 
C) five-number summary 
D) box plot 
A) Chebyshev's theorem 
B) empirical rule 
C) five-number summary 
D) box plot

Question 12

Which of the following is a measure of dispersion?

Accepted Answer

A) percentiles 
B) quartiles 
C) interquartile range 
D) all of these are measures of dispersion 
A) percentiles 
B) quartiles 
C) interquartile range 
D) all of these are measures of dispersion

Question 13

Provide a five-number summary for the follow data.

Accepted Answer

Smallest F1F1F1S1F1F1F10 115,

Question 14

The symbol F1F1F1S1F1F1F10 is used to represent the

Accepted Answer

A) variance of the population 
B) standard deviation of the sample 
C) standard deviation of the population 
D) None of the other answers are correct. 
A) variance of the population 
B) standard deviation of the sample 
C) standard deviation of the population 
D) None of the other answers are correct.

Question 15

Exhibit 3-1
A researcher has collected the following sample data.
  
-Refer to Exhibit 3-1. The mean is

Accepted Answer

A) 5 
B) 6 
C) 7 
D) 8 
A) 5 
B) 6 
C) 7 
D) 8

Question 16

A numerical measure computed from a sample, such as sample mean, is known as a

Accepted Answer

A) population parameter 
B) sample parameter 
C) sample statistic 
D) population mean 
A) population parameter 
B) sample parameter 
C) sample statistic 
D) population mean

Question 17

The standard deviation of a sample of 100 observations equals 64. The variance of the sample equals

Accepted Answer

A) 8 
B) 10 
C) 6,400 
D) 4,096 
A) 8 
B) 10 
C) 6,400 
D) 4,096

Question 18

Excel's __________ function can be used to compute the median.

Accepted Answer

A) MAX 
B) AVERAGE 
C) MEDIAN 
D) MODE 
A) MAX 
B) AVERAGE 
C) MEDIAN 
D) MODE

Question 19

Exhibit 3-2
A researcher has collected the following sample data. The mean of the sample is 5.
  
-Refer to Exhibit 3-2. The range is

Accepted Answer

A) 1 
B) 2 
C) 10 
D) 12 
A) 1 
B) 2 
C) 10 
D) 12

Question 20

For data skewed to the left, the skewness is

Accepted Answer

A) between 0 and .5 
B) less than 1 
C) positive 
D) negative 
A) between 0 and .5 
B) less than 1 
C) positive 
D) negative

The descriptive measure that is not measured in the same units as the original data is the

Excel's __________ function can be used to compute the mode.

In computing descriptive statistics from grouped data,

The annual part-time earnings of a sample of college students are given below. A)Compute the mean. B)Compute the variance. C)Compute the standard deviation. D)Compute the coefficient of variation.

The __________ denotes the number of standard deviations x_i is from the mean .

An important numerical measure of the shape of a distribution is the

Exhibit 3-2 A researcher has collected the following sample data. The mean of the sample is 5. -Refer to Exhibit 3-2. The coefficient of variation is

A numerical measure of linear association between two variables is the

Exhibit 3-3 Suppose annual salaries for sales associates from a particular store have a bell-shaped distribution with a mean of $32,500 and a standard deviation of $2,500. -Refer to Exhibit 3-3. The z-score for a sales associate from this store who earns $37,500 is

__________ can be used to determine the percentage of data values that must be within one, two, and three standard deviations of the mean for data having a bell-shaped distribution.

Which of the following is a measure of dispersion?

Provide a five-number summary for the follow data.

The symbol  is used to represent the

Exhibit 3-1 A researcher has collected the following sample data. -Refer to Exhibit 3-1. The mean is

A numerical measure computed from a sample, such as sample mean, is known as a

The standard deviation of a sample of 100 observations equals 64. The variance of the sample equals

Excel's __________ function can be used to compute the median.

Exhibit 3-2 A researcher has collected the following sample data. The mean of the sample is 5. -Refer to Exhibit 3-2. The range is

For data skewed to the left, the skewness is

Data and Statistics

Descriptive Statistics: Tabular and Graphical Presentations

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Statistical Methods for Quality Control

Time Series Analysis and Forecastng

Filters

Exam 3: Descriptive Statistics: Numerical Measures

The descriptive measure that is not measured in the same units as the original data is the

Excel's __________ function can be used to compute the mode.

In computing descriptive statistics from grouped data,

The annual part-time earnings of a sample of college students are given below. A)Compute the mean. B)Compute the variance. C)Compute the standard deviation. D)Compute the coefficient of variation.

The __________ denotes the number of standard deviations xi is from the mean .

An important numerical measure of the shape of a distribution is the

Exhibit 3-2 A researcher has collected the following sample data. The mean of the sample is 5. -Refer to Exhibit 3-2. The coefficient of variation is

A numerical measure of linear association between two variables is the

Exhibit 3-3 Suppose annual salaries for sales associates from a particular store have a bell-shaped distribution with a mean of $32,500 and a standard deviation of $2,500. -Refer to Exhibit 3-3. The z-score for a sales associate from this store who earns $37,500 is

__________ can be used to determine the percentage of data values that must be within one, two, and three standard deviations of the mean for data having a bell-shaped distribution.

Which of the following is a measure of dispersion?

Provide a five-number summary for the follow data.

The symbol  is used to represent the

Exhibit 3-1 A researcher has collected the following sample data. -Refer to Exhibit 3-1. The mean is

A numerical measure computed from a sample, such as sample mean, is known as a

The standard deviation of a sample of 100 observations equals 64. The variance of the sample equals

Excel's __________ function can be used to compute the median.

Exhibit 3-2 A researcher has collected the following sample data. The mean of the sample is 5. -Refer to Exhibit 3-2. The range is

For data skewed to the left, the skewness is

Data and Statistics

Descriptive Statistics: Tabular and Graphical Presentations

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

Statistical Methods for Quality Control

Time Series Analysis and Forecastng

Filters

The __________ denotes the number of standard deviations x_i is from the mean .