Question 1

The numbers of rooms for 15 homes recently sold were (mean = 7.4):
8, 8, 8, 5, 9, 8, 7, 6, 6, 7, 7, 7, 7, 9, 9

-What is the variance?

Accepted Answer

A) 1.183 
B) 1.400 
C) 4.00 
D) 16.00 
E) 1.96 
A) 1.183 
B) 1.400 
C) 4.00 
D) 16.00 
E) 1.96 B

Question 2

The values given below are snow depths measured as part of a study of satellite observations and water resources.
19, 18, 12, 25, 22, 8, 8, 16

-What is the mean?

Accepted Answer

A) 8 
B) 23.5 
C) 16 
D) 17 
E) 18 
A) 8 
B) 23.5 
C) 16 
D) 17 
E) 18 C

Question 3

Personnel managers usually want to know where a job applicant ranked in an entrance test for their company.With a score of 3.83,Michelle Robinson ranked above the 93rd percentile of the other applicants.What is the percentile rank of an applicant whose score was the median value?

Accepted Answer

50<sup>th</sup>

Question 4

In a rating of the satisfaction with their instructor, 13 students gave the following scores from a scale of 1 to 5;
3, 2, 1, 1, 5, 5, 4, 3, 3, 2, 4, 3, 3

-What are the inner fences?

Accepted Answer

A) -1,7 
B) -4,10 
C) 5,7 
D) 8,10 
E) 3,6 
A) -1,7 
B) -4,10 
C) 5,7 
D) 8,10 
E) 3,6

Question 5

An independent variable is a variable that can be used to describe,predict,or control a dependent variable.

Accepted Answer

A) True 
 B)False

Question 6

In a given data set,the 25th percentile is _______________ equal to the lower hinge.

Accepted Answer

A) always 
B) sometimes 
C) never 
A) always 
B) sometimes 
C) never

Question 7

Given a set of data with a mean of 150 and a standard deviation of 20.Using Chebyshev's Theorem,what is the minimum percentage of data between 110 and 190?

Accepted Answer

The answer of Given a set of data with a...

Question 8

In a statistic class, 10 scores were randomly selected with the following results were obtained:
74, 73, 77, 77, 71, 68, 65, 77, 67, 66

-What are the inner fences?

Accepted Answer

A) 15.375,30.75 
B) 82.125,92.375 
C) 97.50,107.75 
D) 52.00,92.00 
E) 35.95,107.75 
A) 15.375,30.75 
B) 82.125,92.375 
C) 97.50,107.75 
D) 52.00,92.00 
E) 35.95,107.75

Question 9

A disadvantage of using grouping (a frequency table)with sample data is that

Accepted Answer

A) calculations involving central tendency and variation are more complicated than central tendency and variation calculations based on ungrouped data. 
B) the descriptive statistics are less precise than the descriptive statistics obtained using ungrouped data. 
C) the interpretation of the grouped data descriptive statistics is meaningless. 
D) it is much more difficult to summarize the information than it is with the ungrouped data. 
E) it is more difficult to interpret a pie chart. 
A) calculations involving central tendency and variation are more complicated than central tendency and variation calculations based on ungrouped data. 
B) the descriptive statistics are less precise than the descriptive statistics obtained using ungrouped data. 
C) the interpretation of the grouped data descriptive statistics is meaningless. 
D) it is much more difficult to summarize the information than it is with the ungrouped data. 
E) it is more difficult to interpret a pie chart.

Question 10

Compute the sample standard deviation of the data set 6,4,2,1,4,1

Accepted Answer

The answer of Compute the sample standard deviation of the...

Question 11

Compute the mean of the data 32,33,22,28,24,23,27,24,27,21.

Accepted Answer

The answer of Compute the mean of the data 32,33,22,28,24,23,27,24,27,21....

Question 12

A CFO is looking at the percentage of a company's resources are spent on computing.The CFO samples companies in the pharmaceutical industry and developed the following stem-and-leaf display. $$\begin{array} { l l } 
5 & 269 \
6 & 255568999 \
7 & 11224557789 \
8 & 001222458 \
9 & 02455679 \
10 & 1556 \
11 & 137 \
12 & \
13 & 255
\end{array}$$
-What is the smallest percent spent on computing?

Accepted Answer

The answer of A CFO is looking at the percentage...

Question 13

The reaction time in seconds to a stop light for a group of adult men were found to be
0.74, 0.71, 0.41, 0.82, 0.74, 0.85, 0.99, 0.71, 0.57, 0.85, 0.57, 0.55 (mean = .709)

-What is the range?

Accepted Answer

A) 0.026 
B) 0.052 
C) 0.580 
D) 0.1613 
E) 0.0007 
A) 0.026 
B) 0.052 
C) 0.580 
D) 0.1613 
E) 0.0007

Question 14

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are;
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68

-What is the 65th percentile?

Accepted Answer

A) 73 
B) 68 
C) 71 
D) 67 
E) 75 
A) 73 
B) 68 
C) 71 
D) 67 
E) 75

Question 15

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are;
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68

-What is the third quartile?

Accepted Answer

A) 73 
B) 68 
C) 70.5 
D) 67 
E) 75 
A) 73 
B) 68 
C) 70.5 
D) 67 
E) 75

Question 16

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are (mean = 70):
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68

-What is the variance?

Accepted Answer

A) 18 
B) 4.73 
C) 22.40 
D) 324 
E) 6.76 
A) 18 
B) 4.73 
C) 22.40 
D) 324 
E) 6.76

Question 17

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are;
68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68

-What are the inner fences?

Accepted Answer

A) 75.5,80.5 
B) 83,88 
C) 60.5,80.5 
D) 53,88 
E) 7.5,15 
A) 75.5,80.5 
B) 83,88 
C) 60.5,80.5 
D) 53,88 
E) 7.5,15

Question 18

If one intends to compare the relative variation between two samples involving two different quantitative variables with different measurement scales,then the most appropriate way is to compare the __________ from the two samples.

Accepted Answer

A) standard deviations 
B) variances 
C) coefficients of variation 
D) ranges 
E) interquartile ranges 
A) standard deviations 
B) variances 
C) coefficients of variation 
D) ranges 
E) interquartile ranges

Question 19

The company financial officer was interested in the average cost of PCs that had been purchased in the past six months. A random sample of the price of 10 computers was taken with the following results:
$3,250, $1,127, $2,995, $3,250, $3,445, $3,449, $1,482, $6,120, $3,009, $4,000

-What is the median?

Accepted Answer

A) 3447 
B) 3213 
C) 3250 
D) 6120 
E) 3445 
A) 3447 
B) 3213 
C) 3250 
D) 6120 
E) 3445

Question 20

Another name for the 50th percentile is the _____.

Accepted Answer

The numbers of rooms for 15 homes recently sold were (mean = 7.4): 8, 8, 8, 5, 9, 8, 7, 6, 6, 7, 7, 7, 7, 9, 9 -What is the variance?

The values given below are snow depths measured as part of a study of satellite observations and water resources. 19, 18, 12, 25, 22, 8, 8, 16 -What is the mean?

Personnel managers usually want to know where a job applicant ranked in an entrance test for their company.With a score of 3.83,Michelle Robinson ranked above the 93^rd percentile of the other applicants.What is the percentile rank of an applicant whose score was the median value?

In a rating of the satisfaction with their instructor, 13 students gave the following scores from a scale of 1 to 5; 3, 2, 1, 1, 5, 5, 4, 3, 3, 2, 4, 3, 3 -What are the inner fences?

An independent variable is a variable that can be used to describe,predict,or control a dependent variable.

In a given data set,the 25^th percentile is _______________ equal to the lower hinge.

Given a set of data with a mean of 150 and a standard deviation of 20.Using Chebyshev's Theorem,what is the minimum percentage of data between 110 and 190?

In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 -What are the inner fences?

A disadvantage of using grouping (a frequency table)with sample data is that

Compute the sample standard deviation of the data set 6,4,2,1,4,1

Compute the mean of the data 32,33,22,28,24,23,27,24,27,21.

The reaction time in seconds to a stop light for a group of adult men were found to be 0.74, 0.71, 0.41, 0.82, 0.74, 0.85, 0.99, 0.71, 0.57, 0.85, 0.57, 0.55 (mean = .709) -What is the range?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the 65^th percentile?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the third quartile?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the variance?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What are the inner fences?

If one intends to compare the relative variation between two samples involving two different quantitative variables with different measurement scales,then the most appropriate way is to compare the __________ from the two samples.

Another name for the 50^th percentile is the _____.

An Introduction to Business Statistics

Probability

Discrete Random Variables

Continuous Random Variables

Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences Based on Two Samples

Experimental Design and Analysis of Variance

Correlation Coefficient and Simple Linear Regression Analysis

Multiple Regression and Model Building

Nonparametric Methods

Chi-Square Tests

Decision Theory

Time Series Forecasting

Filters

Exam 2: Descriptive Statistics

The numbers of rooms for 15 homes recently sold were (mean = 7.4): 8, 8, 8, 5, 9, 8, 7, 6, 6, 7, 7, 7, 7, 9, 9 -What is the variance?

The values given below are snow depths measured as part of a study of satellite observations and water resources. 19, 18, 12, 25, 22, 8, 8, 16 -What is the mean?

Personnel managers usually want to know where a job applicant ranked in an entrance test for their company.With a score of 3.83,Michelle Robinson ranked above the 93rd percentile of the other applicants.What is the percentile rank of an applicant whose score was the median value?

In a rating of the satisfaction with their instructor, 13 students gave the following scores from a scale of 1 to 5; 3, 2, 1, 1, 5, 5, 4, 3, 3, 2, 4, 3, 3 -What are the inner fences?

An independent variable is a variable that can be used to describe,predict,or control a dependent variable.

In a given data set,the 25th percentile is _______________ equal to the lower hinge.

Given a set of data with a mean of 150 and a standard deviation of 20.Using Chebyshev's Theorem,what is the minimum percentage of data between 110 and 190?

In a statistic class, 10 scores were randomly selected with the following results were obtained: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66 -What are the inner fences?

A disadvantage of using grouping (a frequency table)with sample data is that

Compute the sample standard deviation of the data set 6,4,2,1,4,1

Compute the mean of the data 32,33,22,28,24,23,27,24,27,21.

The reaction time in seconds to a stop light for a group of adult men were found to be 0.74, 0.71, 0.41, 0.82, 0.74, 0.85, 0.99, 0.71, 0.57, 0.85, 0.57, 0.55 (mean = .709) -What is the range?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the 65th percentile?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the third quartile?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the variance?

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What are the inner fences?

If one intends to compare the relative variation between two samples involving two different quantitative variables with different measurement scales,then the most appropriate way is to compare the __________ from the two samples.

Another name for the 50th percentile is the _____.

An Introduction to Business Statistics

Probability

Discrete Random Variables

Continuous Random Variables

Sampling Distributions

Confidence Intervals

Hypothesis Testing

Statistical Inferences Based on Two Samples

Experimental Design and Analysis of Variance

Correlation Coefficient and Simple Linear Regression Analysis

Multiple Regression and Model Building

Nonparametric Methods

Chi-Square Tests

Decision Theory

Time Series Forecasting

Filters

Personnel managers usually want to know where a job applicant ranked in an entrance test for their company.With a score of 3.83,Michelle Robinson ranked above the 93^rd percentile of the other applicants.What is the percentile rank of an applicant whose score was the median value?

In a given data set,the 25^th percentile is _______________ equal to the lower hinge.

In a hearing test, subjects estimate the loudness (in decibels) of sound, and the results are; 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68 -What is the 65^th percentile?

Another name for the 50^th percentile is the _____.