Question 1

The measure of location most likely to be influenced by extreme values in the data set is the _____.

Accepted Answer

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

Question 2

Excel's _____ function can be used to compute the population variance.

Accepted Answer

A)  VAR.S 
B)  VAR.C 
C)  VAR 
D)  None of the answers is correct. 
A)  VAR.S 
B)  VAR.C 
C)  VAR 
D)  None of the answers is correct.

Question 3

Interpret the scatter plot in terms of correlation.
​

Accepted Answer

There is a moderate,

Question 4

The five-number summary consists of what five statistical measures?

Accepted Answer

A)  min, Q1, median, Q3, max 
B)  Q1, Q2, median, Q3, Q4 
C)  min, Q1, mean, Q3, max 
D)  Q1, Q2, mean, Q3, Q4 
A)  min, Q1, median, Q3, max 
B)  Q1, Q2, median, Q3, Q4 
C)  min, Q1, mean, Q3, max 
D)  Q1, Q2, mean, Q3, Q4

Question 5

A numerical measure of linear association between two variables is the _____.

Accepted Answer

A)  variance 
B)  covariance 
C)  standard deviation 
D)  coefficient of variation 
A)  variance 
B)  covariance 
C)  standard deviation 
D)  coefficient of variation

Question 6

The first quartile _____.

Accepted Answer

A)  contains at least one third of the data elements 
B)  is the same as the 25th percentile 
C)  is the same as the 50th percentile 
D)  is the same as the 75th percentile 
A)  contains at least one third of the data elements 
B)  is the same as the 25th percentile 
C)  is the same as the 50th percentile 
D)  is the same as the 75th percentile

Question 7

Which of the following symbols represents the size of a population?

Accepted Answer

A)  σ 2 
B)  σ 
C)  μ 
D)  N 
A)  σ 2 
B)  σ 
C)  μ 
D)  N

Question 8

A graph with skewness -1.8 would be which of the following?

Accepted Answer

A)  moderately skewed left 
B)  highly skewed left 
C)  moderately skewed right 
D)  highly skewed right 
A)  moderately skewed left 
B)  highly skewed left 
C)  moderately skewed right 
D)  highly skewed right

Question 9

Positive values of covariance indicate _____.

Accepted Answer

A)  a positive variance of the x values 
B)  a positive variance of the y values 
C)  the standard deviation is positive 
D)  a positive relation between the x and y variables 
A)  a positive variance of the x values 
B)  a positive variance of the y values 
C)  the standard deviation is positive 
D)  a positive relation between the x and y variables

Question 10

Reed Auto periodically has a special weeklong sale. As part of the advertising campaign, Reed runs one or more television commercials during the weekend preceding the sale. Data from a sample of five previous sales are shown below.
​ $\begin{array}{lll}
\text { Week } & \text { TV Ads } & \text { Cars Sold }\\hline
1 & 1 & 14 \
2 & 3 & 24 \
3 & 2 & 18 \
4 & 1 & 17 \
5 & 3 & 27
\end{array}$ Compute and interpret both the sample covariance and the sample correlation coefficient.
​

Accepted Answer

Sample covariance =

Question 11

The 75th percentile is also the _____.

Accepted Answer

A)  first quartile 
B)  second quartile 
C)  third quartile 
D)  fourth quartile 
A)  first quartile 
B)  second quartile 
C)  third quartile 
D)  fourth quartile

Question 12

Excel's _____ function can be used to compute the middle value of an ordered data set.

Accepted Answer

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

Question 13

The measure of location often used in analyzing growth rates in financial data is the _____.

Accepted Answer

A)  arithmetic mean 
B)  weighted mean 
C)  geometric mean 
D)  hyperbolic mean 
A)  arithmetic mean 
B)  weighted mean 
C)  geometric mean 
D)  hyperbolic mean

Question 14

The weight (in pounds) of a sample of 36 individuals was recorded, and the following statistics were calculated. mean = 160
Range = 60
Mode = 165
Variance = 324
Median = 170
The coefficient of variation is _____.

Accepted Answer

A)  0.1125% 
B)  11.25% 
C)  203.12% 
D)  0.20312% 
A)  0.1125% 
B)  11.25% 
C)  203.12% 
D)  0.20312%

Question 15

A(n) _____ is an unusually small or unusually large data value.

Accepted Answer

A)  sample statistic 
B)  median 
C)  z-score 
D)  outlier 
A)  sample statistic 
B)  median 
C)  z-score 
D)  outlier

Question 16

Use Excel to make a box plot of the following data:
​ $$\begin{array} { r l l l l } 
15 & 11 & 53 & 14 & 36 \
68 & 26 & 15 & 13 & 20
\end{array}$$ ​
​

Accepted Answer

The answer of Use Excel to make a box plot...

Question 17

The 50th percentile is the _____.

Accepted Answer

A)  mode 
B)  median 
C)  mean 
D)  third quartile 
A)  mode 
B)  median 
C)  mean 
D)  third quartile

Question 18

Chebyshev's theorem requires that z be _____.

Accepted Answer

A)  an integer 
B)  greater than 1 
C)  less than or equal to 3 
D)  between 0 and 4 
A)  an integer 
B)  greater than 1 
C)  less than or equal to 3 
D)  between 0 and 4

Question 19

_____ can be used to make statements about the proportion of data values that must be within a specified number of standard deviations of the mean, regardless of the shape of the distribution.

Accepted Answer

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

Question 20

The variance of a sample of 81 observations is 64. The standard deviation of the sample is which of the following?

Accepted Answer

A)  9 
B)  4,096 
C)  8 
D)  6,561 
A)  9 
B)  4,096 
C)  8 
D)  6,561

The measure of location most likely to be influenced by extreme values in the data set is the _____.

Excel's _____ function can be used to compute the population variance.

Interpret the scatter plot in terms of correlation.

The five-number summary consists of what five statistical measures?

A numerical measure of linear association between two variables is the _____.

The first quartile _____.

Which of the following symbols represents the size of a population?

A graph with skewness -1.8 would be which of the following?

Positive values of covariance indicate _____.

The 75th percentile is also the _____.

Excel's _____ function can be used to compute the middle value of an ordered data set.

The measure of location often used in analyzing growth rates in financial data is the _____.

The weight (in pounds) of a sample of 36 individuals was recorded, and the following statistics were calculated. mean = 160 Range = 60 Mode = 165 Variance = 324 Median = 170 The coefficient of variation is _____.

A(n) _____ is an unusually small or unusually large data value.

Use Excel to make a box plot of the following data: 15 11 53 14 36 68 26 15 13 20

The 50th percentile is the _____.

Chebyshev's theorem requires that z be _____.

_____ can be used to make statements about the proportion of data values that must be within a specified number of standard deviations of the mean, regardless of the shape of the distribution.

The variance of a sample of 81 observations is 64. The standard deviation of the sample is which of the following?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence, and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters

Exam 3: Descriptive Statistics: Numerical Measures

The measure of location most likely to be influenced by extreme values in the data set is the _____.

Excel's _____ function can be used to compute the population variance.

Interpret the scatter plot in terms of correlation. ​

The five-number summary consists of what five statistical measures?

A numerical measure of linear association between two variables is the _____.

The first quartile _____.

Which of the following symbols represents the size of a population?

A graph with skewness -1.8 would be which of the following?

Positive values of covariance indicate _____.

The 75th percentile is also the _____.

Excel's _____ function can be used to compute the middle value of an ordered data set.

The measure of location often used in analyzing growth rates in financial data is the _____.

The weight (in pounds) of a sample of 36 individuals was recorded, and the following statistics were calculated. mean = 160 Range = 60 Mode = 165 Variance = 324 Median = 170 The coefficient of variation is _____.

A(n) _____ is an unusually small or unusually large data value.

Use Excel to make a box plot of the following data: ​ 15 11 53 14 36 68 26 15 13 20 ​ ​

The 50th percentile is the _____.

Chebyshev's theorem requires that z be _____.

_____ can be used to make statements about the proportion of data values that must be within a specified number of standard deviations of the mean, regardless of the shape of the distribution.

The variance of a sample of 81 observations is 64. The standard deviation of the sample is which of the following?

Data and Statistics

Descriptive Statistics: Tabular and Graphical Displays

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Inference About Means and Proportions With Two Populations

Inferences About Population Variances

Tests of Goodness of Fit, Independence, and Multiple Proportions

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Regression Analysis: Model Building

Time Series Analysis and Forecasting

Nonparametric Methods

Statistical Methods for Quality Control

Decision Analysis

Sample Survey

Filters

Interpret the scatter plot in terms of correlation.

Use Excel to make a box plot of the following data: 15 11 53 14 36 68 26 15 13 20