Question 1

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

Question 2

From a population of size 500, a random sample of 50 items is selected.The mode of the sample

Accepted Answer

A)  must be 500. 
B)  must be equal to the mode of population, if the sample is truly random. 
C)  must be equal to the mean of the population, if the sample is truly random. 
D)  can be larger, smaller or equal to the mode of the population. 
A)  must be 500. 
B)  must be equal to the mode of population, if the sample is truly random. 
C)  must be equal to the mean of the population, if the sample is truly random. 
D)  can be larger, smaller or equal to the mode of the population.

Question 3

The closing stock price of MNM Corporation for the last 7 trading days is shown below. $$\begin{array} { c c } 
\text { Day } & \text { Stock Price } \
1 & 84 \
2 & 87 \
3 & 84 \
4 & 88 \
5 & 85 \
6 & 90 \
7 & 91
\end{array}$$ 
The variance is

Accepted Answer

A)  2.828. 
B)  8. 
C)  9. 
D)  81. 
A)  2.828. 
B)  8. 
C)  9. 
D)  81.

Question 4

The closing stock price of MNM Corporation for the last 7 trading days is shown below. $$\begin{array} { c c } 
\text { Day } & \text { Stock Price } \
1 & 84 \
2 & 87 \
3 & 84 \
4 & 88 \
5 & 85 \
6 & 90 \
7 & 91
\end{array}$$   The median is

Accepted Answer

A)  84. 
B)  85. 
C)  86. 
D)  87. 
A)  84. 
B)  85. 
C)  86. 
D)  87.

Question 5

​Which of the following statements about financial growth factors using the geometric mean is untrue?

Accepted Answer

A)  ​The growth factor cannot be less than zero. 
B)  ​A growth factor less than 1 indicates negative growth. 
C)  ​A growth factor greater than 2 indicates more than 100 percent growth. 
D)  ​A growth factor greater than 0 indicates positive growth. 
A)  ​The growth factor cannot be less than zero. 
B)  ​A growth factor less than 1 indicates negative growth. 
C)  ​A growth factor greater than 2 indicates more than 100 percent growth. 
D)  ​A growth factor greater than 0 indicates positive growth.

Question 6

The ages of a sample of 8 faculty members selected from the School of Business Administration are shown below. $$\begin{array} { l l } 
\text { Faculty } & \text { Age } \
1 & 42 \
2 & 30 \
3 & 73 \
4 & 50 \
5 & 51 \
6 & 37 \
7 & 42 \
8 & 59
\end{array}$$ ​ 
a.
Compute the average age.
b.
Determine the mode.
c.
Compute the median age.
d.
Compute the standard deviation.

Accepted Answer

a.
48
b.
4

Question 7

The correlation coefficient ranges between

Accepted Answer

A)  0 and 1. 
B)  -1 and +1. 
C)  minus infinity and plus infinity. 
D)  1 and 100. 
A)  0 and 1. 
B)  -1 and +1. 
C)  minus infinity and plus infinity. 
D)  1 and 100.

Question 8

The closing stock price of MNM Corporation for the last 7 trading days is shown below. $$\begin{array} { c c } 
\text { Day } & \text { Stock Price } \
1 & 84 \
2 & 87 \
3 & 84 \
4 & 88 \
5 & 85 \
6 & 90 \
7 & 91
\end{array}$$  The mean is

Accepted Answer

A)  84. 
B)  85. 
C)  86. 
D)  87. 
A)  84. 
B)  85. 
C)  86. 
D)  87.

Question 9

When a percentage of the smallest and largest values are deleted from a data set, the mean of the remaining data values is the

Accepted Answer

A)  geometric mean. 
B)  weighted mean. 
C)  trimmed mean. 
D)  interquartile mean. 
A)  geometric mean. 
B)  weighted mean. 
C)  trimmed mean. 
D)  interquartile mean.

Question 10

Growth factors for the population of Chattanooga in the past two years have been 8 and 12.The geometric mean has a value of

Accepted Answer

A)  20. 
B)  $\sqrt { 20 }$ . 
C)  $\sqrt { 96 }$ . 
D)  96. 
A)  20. 
B)  $\sqrt { 20 }$ . 
C)  $\sqrt { 96 }$ . 
D)  96.

Question 11

Which of the following symbols represents the variance of the population?

Accepted Answer

A)  $\sigma$2 
B)  $\sigma$ 
C)  $\mu$ 
D)  $\bar x$ 
A)  $\sigma$2 
B)  $\sigma$ 
C)  $\mu$ 
D)  $\bar x$

Question 12

​If the data distribution is symmetric, the skewness is

Accepted Answer

A)  ​0. 
B)  ​.5. 
C)  ​1. 
D)  ​positive. 
A)  ​0. 
B)  ​.5. 
C)  ​1. 
D)  ​positive.

Question 13

The 75th percentile is referred to as 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 14

The following data shows the yearly salaries of a sample of MBA graduates. $$\begin{array}{cc}
\text { MBA Student}&\text {  Salary (in } \$ 1,000 \text { ) }\
\text { A } & 78 \
\mathrm {~B} & 87 \
\mathrm { C } & 80 \
\mathrm { D } & 100 \
\mathrm { E } & 104 \
\mathrm {~F} & 88 \
\mathrm { G } & 82 \
\mathrm { H } & 85
\end{array}$$ ​ 
a.
Compute the mean yearly salary and give your answer in dollars.
b.
Compute the standard deviation and give your answer in dollars.
c.
Compute the 75th percentile and give your answer in dollars. Fully explain what the value that you have determined indicates.

Accepted Answer

a.
$88,000
b.
$9,355

Question 15

Since the median is the middle value of a data set it

Accepted Answer

A)  must always be smaller than the mode. 
B)  must always be larger than the mode. 
C)  must always be smaller than the mean. 
D)  none of these alternatives is correct. 
A)  must always be smaller than the mode. 
B)  must always be larger than the mode. 
C)  must always be smaller than the mean. 
D)  none of these alternatives is correct.

Question 16

Which of the following symbols represents the size of the sample?

Accepted Answer

A)  σ2 
B)  σ 
C)  N 
D)  n 
A)  σ2 
B)  σ 
C)  N 
D)  n

Question 17

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

Accepted Answer

A)  σ2 
B)  σ 
C)  μ 
D)  N 
A)  σ2 
B)  σ 
C)  μ 
D)  N

Question 18

Below is a sample of scores from a professor's most recent exam. $$\begin{array} { l l } 
\text { Student } & \text { Score } \
1 & 83 \
2 & 91 \
3 & 79 \
4 & 99 \
5 & 88 \
6 & 81 \
7 & 95
\end{array}$$ Calculate the following. 
a.
The mean
b.
The standard deviation
c.
The 65th percentile

Accepted Answer

a.
88
b.
7

Question 19

The pth percentile is a value such that approximately

Accepted Answer

A)  p percent of the observations are less than the value and (100 - p) percent are more than this value. 
B)  p percent of the observations are less than the value and p percent are more than this value. 
C)  (100 - p) percent of the observations are less than the value and p percent are more than this value. 
D)  (100 - p) percent of the observations are less than the value and (100 - p) percent are more than this value. 
A)  p percent of the observations are less than the value and (100 - p) percent are more than this value. 
B)  p percent of the observations are less than the value and p percent are more than this value. 
C)  (100 - p) percent of the observations are less than the value and p percent are more than this value. 
D)  (100 - p) percent of the observations are less than the value and (100 - p) percent are more than this value.

Question 20

The mean of a sample

Accepted Answer

A)  is always equal to the mean of the population. 
B)  is always smaller than the mean of the population. 
C)  is computed by summing the data values and dividing the sum by (n - 1). 
D)  is computed by summing all the data values and dividing the sum by the number of items. 
A)  is always equal to the mean of the population. 
B)  is always smaller than the mean of the population. 
C)  is computed by summing the data values and dividing the sum by (n - 1). 
D)  is computed by summing all the data values and dividing the sum by the number of items.

Positive values of covariance indicate

From a population of size 500, a random sample of 50 items is selected.The mode of the sample

The closing stock price of MNM Corporation for the last 7 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 The variance is

The closing stock price of MNM Corporation for the last 7 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 The median is

Which of the following statements about financial growth factors using the geometric mean is untrue?

The ages of a sample of 8 faculty members selected from the School of Business Administration are shown below. Faculty Age 1 42 2 30 3 73 4 50 5 51 6 37 7 42 8 59 a. Compute the average age. b. Determine the mode. c. Compute the median age. d. Compute the standard deviation.

The correlation coefficient ranges between

The closing stock price of MNM Corporation for the last 7 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 The mean is

When a percentage of the smallest and largest values are deleted from a data set, the mean of the remaining data values is the

Growth factors for the population of Chattanooga in the past two years have been 8 and 12.The geometric mean has a value of

Which of the following symbols represents the variance of the population?

If the data distribution is symmetric, the skewness is

The 75th percentile is referred to as the

Since the median is the middle value of a data set it

Which of the following symbols represents the size of the sample?

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

Below is a sample of scores from a professor's most recent exam. Student Score 1 83 2 91 3 79 4 99 5 88 6 81 7 95 Calculate the following. a. The mean b. The standard deviation c. The 65^th percentile

The pth percentile is a value such that approximately

The mean of a sample

Data and Statistics

Descriptive Statistics: Tabulargraphical

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

Comparing Multiple Proportions, Test of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Exam 3: Descriptive Statistics: Numerical

Positive values of covariance indicate

From a population of size 500, a random sample of 50 items is selected.The mode of the sample

The closing stock price of MNM Corporation for the last 7 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 The variance is

The closing stock price of MNM Corporation for the last 7 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 The median is

​Which of the following statements about financial growth factors using the geometric mean is untrue?

The ages of a sample of 8 faculty members selected from the School of Business Administration are shown below. Faculty Age 1 42 2 30 3 73 4 50 5 51 6 37 7 42 8 59 ​ a. Compute the average age. b. Determine the mode. c. Compute the median age. d. Compute the standard deviation.

The correlation coefficient ranges between

The closing stock price of MNM Corporation for the last 7 trading days is shown below. Day Stock Price 1 84 2 87 3 84 4 88 5 85 6 90 7 91 The mean is

When a percentage of the smallest and largest values are deleted from a data set, the mean of the remaining data values is the

Growth factors for the population of Chattanooga in the past two years have been 8 and 12.The geometric mean has a value of

Which of the following symbols represents the variance of the population?

​If the data distribution is symmetric, the skewness is

The 75th percentile is referred to as the

Since the median is the middle value of a data set it

Which of the following symbols represents the size of the sample?

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

Below is a sample of scores from a professor's most recent exam. Student Score 1 83 2 91 3 79 4 99 5 88 6 81 7 95 Calculate the following. a. The mean b. The standard deviation c. The 65th percentile

The pth percentile is a value such that approximately

The mean of a sample

Data and Statistics

Descriptive Statistics: Tabulargraphical

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

Comparing Multiple Proportions, Test of Independence and Goodness of Fit

Experimental Design and Analysis of Variance

Simple Linear Regression

Multiple Regression

Filters

Which of the following statements about financial growth factors using the geometric mean is untrue?

The ages of a sample of 8 faculty members selected from the School of Business Administration are shown below. Faculty Age 1 42 2 30 3 73 4 50 5 51 6 37 7 42 8 59 a. Compute the average age. b. Determine the mode. c. Compute the median age. d. Compute the standard deviation.

If the data distribution is symmetric, the skewness is

Below is a sample of scores from a professor's most recent exam. Student Score 1 83 2 91 3 79 4 99 5 88 6 81 7 95 Calculate the following. a. The mean b. The standard deviation c. The 65^th percentile