Question 1

Consider the following sample data: 4,14,6,9,21,3,7,and 10.
What is the mode?

Accepted Answer

There is n

Question 2

Consider the following data set: $$\begin{array} { l l l l l l l l } 
2 & 2 & 2 & 3 & 4 & 7 & 7 & 9 \
16 & 17 & 19 & 22 & 22 & 23 & 23 & 47
\end{array}$$ Calculate the twenty-fifth,fiftieth,and seventy-fifth percentiles:
25th percentile = ____________________
50th percentile = ____________________
75th percentile = ____________________

Accepted Answer

The answer of Consider the following data set: \[\begin{array} {...

Question 3

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6.
Calculate the sample standard deviation.

Accepted Answer

The answer of A sample of 13 monthly sales figures...

Question 4

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6.
What is the coefficient of variation?

Accepted Answer

The answer of A sample of 13 monthly sales figures...

Question 5

When a distribution has more values to the left and tails to the right,we say it is skewed negatively.

Accepted Answer

A) True 
 B)False

Question 6

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6.
Calculate the mean absolute deviation.

Accepted Answer

The answer of A sample of 13 monthly sales figures...

Question 7

A sample of 13 measurements has a mean of 28 and a standard deviation of 3.50.Suppose that the sample is enlarged to 15 measurements,by including two additional measurements having common value of 28 each.
A)Find the mean of the sample of 15 measurements.
B)Find the standard deviation of the sample of 15 measurements.

Accepted Answer

The answer of A sample of 13 measurements has a...

Question 8

____________________ divide the values into 100 parts of equal size,each comprising 1% of the observations.

Accepted Answer

The answer of ____________________ divide the values into 100 parts...

Question 9

Which of the following statements is correct?

Accepted Answer

A)  The range is found by taking the difference between the high and low values and dividing by 2. 
B)  The interquartile range is found by taking the difference between the 1st and 3rd quartiles and dividing that value by 2. 
C)  The standard deviation is expressed in terms of the original units of measurement but the variance is not. 
D)  The values of the standard deviation may be either positive or negative,while the value of the variance will always be positive. 
E)  None of these statements is true. 
A)  The range is found by taking the difference between the high and low values and dividing by 2. 
B)  The interquartile range is found by taking the difference between the 1st and 3rd quartiles and dividing that value by 2. 
C)  The standard deviation is expressed in terms of the original units of measurement but the variance is not. 
D)  The values of the standard deviation may be either positive or negative,while the value of the variance will always be positive. 
E)  None of these statements is true.

Question 10

Deciles:

Accepted Answer

A)  are an array of values in 10 parts of equal size. 
B)  indicate the median with the fifth decile. 
C)  divide the values into four parts of equal size. 
D)  indicate the median with the second decile. 
E)  both A and B are correct. 
A)  are an array of values in 10 parts of equal size. 
B)  indicate the median with the fifth decile. 
C)  divide the values into four parts of equal size. 
D)  indicate the median with the second decile. 
E)  both A and B are correct.

Question 11

The mode is defined as the value that has just as many values above it as it has below it.

Accepted Answer

A) True 
 B)False

Question 12

Standardized values have no units,even though the original data,the standard deviation,and the mean may each represent units such as dollars,hours,or pounds.

Accepted Answer

A) True 
 B)False

Question 13

Sample data
Consider the following sample data: 6,10,4,3,7,9,21,and 14.
-What is the variance?

Accepted Answer

The answer of Sample data
Consider the following sample data: 6,10,4,3,7,9,21,and...

Question 14

Measures of ____________________ are numbers that describe typical values in the data.

Accepted Answer

The answer of Measures of ____________________ are numbers that describe...

Question 15

The mean of fifty sales receipts is $58.35 and the standard deviation is $10.38.Using Chebyshev's theorem,determine how many sales receipts were between $37.59 and $79.11.

Accepted Answer

The answer of The mean of fifty sales receipts is...

Question 16

Pizza
In preparation for a pizza party,the students at State University surveyed the price of medium-sized pizzas for local restaurants: $$\begin{array} { | c | c | } 
\hline \text { Restaurant } & \text { Price } \
\hline \text { Mr. Gattis } & 7.15 \
\text { Pizza Hut } & 7.00 \
\text { Little Italy } & 6.85 \
\text { Dominos } & 8.00 \
\text { Pizza Inn } & 7.50 \
\text { Mazzios } & 6.45 \
\text { Rossini's } & 8.50 \
\text { Pizza Works } & 7.75 \
\hline
\end{array}$$
-What is the range of these prices?

Accepted Answer

The answer of Pizza
In preparation for a pizza party,the students...

Question 17

The weights for a weighted mean calculation must sum up to 1.0.

Accepted Answer

A) True 
 B)False

Question 18

The chapter notes that the standard deviation will always be larger than the mean absolute deviation.Explain why.

Accepted Answer

When the extreme val

Question 19

A personnel director takes a random sample of the weekly wages of 25 workers and determines that the mean is $429.70 and standard deviation is $119.69.If the population distribution is not known,what percentage of the wages will fall between $70.63 and $788.77?

Accepted Answer

The answer of A personnel director takes a random sample...

Question 20

Salaries
The salaries (in thousands of dollars)for a sample of 13 employees of a firm are: 26.5,23.5,29.7,24.8,21.1,24.3,20.4,22.7,27.2,23.7,24.1,24.8,and 28.2.
-Compute the median salary.

Accepted Answer

The answer of Salaries
The salaries (in thousands of dollars)for a...

Consider the following sample data: 4,14,6,9,21,3,7,and 10. What is the mode?

Consider the following data set: 2 2 2 3 4 7 7 9 16 17 19 22 22 23 23 47 Calculate the twenty-fifth,fiftieth,and seventy-fifth percentiles: 25th percentile = 50th percentile = 75th percentile =

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6. Calculate the sample standard deviation.

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6. What is the coefficient of variation?

When a distribution has more values to the left and tails to the right,we say it is skewed negatively.

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6. Calculate the mean absolute deviation.

____________________ divide the values into 100 parts of equal size,each comprising 1% of the observations.

Which of the following statements is correct?

Deciles:

The mode is defined as the value that has just as many values above it as it has below it.

Standardized values have no units,even though the original data,the standard deviation,and the mean may each represent units such as dollars,hours,or pounds.

Sample data Consider the following sample data: 6,10,4,3,7,9,21,and 14. -What is the variance?

Measures of ____________________ are numbers that describe typical values in the data.

The mean of fifty sales receipts is $58.35 and the standard deviation is $10.38.Using Chebyshev's theorem,determine how many sales receipts were between $37.59 and $79.11.

The weights for a weighted mean calculation must sum up to 1.0.

The chapter notes that the standard deviation will always be larger than the mean absolute deviation.Explain why.

A personnel director takes a random sample of the weekly wages of 25 workers and determines that the mean is $429.70 and standard deviation is $119.69.If the population distribution is not known,what percentage of the wages will fall between $70.63 and $788.77?

Salaries The salaries (in thousands of dollars)for a sample of 13 employees of a firm are: 26.5,23.5,29.7,24.8,21.1,24.3,20.4,22.7,27.2,23.7,24.1,24.8,and 28.2. -Compute the median salary.

A Preview of Business Statistics

Visual Description of Data

Data Collection and Sampling Methods

Probability: Review of Basic Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Estimation From Sample Data

Hypothesis Tests Involving a Sample Mean or Proportion

Hypothesis Tests Involving Two Sample Means

Analysis of Variance Tests

Chi-Square Applications

Nonparametric Methods

Simple Linear Regression and Correlation

Multiple Regression and Correlation

Model Building

Models for Time Series and Forecasting

Decision Theory

Total Quality Management

Filters

Exam 3: Statistical Description of Data

Consider the following sample data: 4,14,6,9,21,3,7,and 10. What is the mode?

Consider the following data set: 2 2 2 3 4 7 7 9 16 17 19 22 22 23 23 47 Calculate the twenty-fifth,fiftieth,and seventy-fifth percentiles: 25th percentile = ____________________ 50th percentile = ____________________ 75th percentile = ____________________

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6. Calculate the sample standard deviation.

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6. What is the coefficient of variation?

When a distribution has more values to the left and tails to the right,we say it is skewed negatively.

A sample of 13 monthly sales figures (in thousands of dollars)are: 10,6,5,10,9,7,10,9,6,8,9,6,and 6. Calculate the mean absolute deviation.

____________________ divide the values into 100 parts of equal size,each comprising 1% of the observations.

Which of the following statements is correct?

Deciles:

The mode is defined as the value that has just as many values above it as it has below it.

Standardized values have no units,even though the original data,the standard deviation,and the mean may each represent units such as dollars,hours,or pounds.

Sample data Consider the following sample data: 6,10,4,3,7,9,21,and 14. -What is the variance?

Measures of ____________________ are numbers that describe typical values in the data.

The mean of fifty sales receipts is $58.35 and the standard deviation is $10.38.Using Chebyshev's theorem,determine how many sales receipts were between $37.59 and $79.11.

The weights for a weighted mean calculation must sum up to 1.0.

The chapter notes that the standard deviation will always be larger than the mean absolute deviation.Explain why.

A personnel director takes a random sample of the weekly wages of 25 workers and determines that the mean is $429.70 and standard deviation is $119.69.If the population distribution is not known,what percentage of the wages will fall between $70.63 and $788.77?

Salaries The salaries (in thousands of dollars)for a sample of 13 employees of a firm are: 26.5,23.5,29.7,24.8,21.1,24.3,20.4,22.7,27.2,23.7,24.1,24.8,and 28.2. -Compute the median salary.

A Preview of Business Statistics

Visual Description of Data

Data Collection and Sampling Methods

Probability: Review of Basic Concepts

Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Estimation From Sample Data

Hypothesis Tests Involving a Sample Mean or Proportion

Hypothesis Tests Involving Two Sample Means

Analysis of Variance Tests

Chi-Square Applications

Nonparametric Methods

Simple Linear Regression and Correlation

Multiple Regression and Correlation

Model Building

Models for Time Series and Forecasting

Decision Theory

Total Quality Management

Filters

Consider the following data set: 2 2 2 3 4 7 7 9 16 17 19 22 22 23 23 47 Calculate the twenty-fifth,fiftieth,and seventy-fifth percentiles: 25th percentile = 50th percentile = 75th percentile =