Question 1

The larger the Z score,the farther is the distance from the value to the median.

Accepted Answer

A) True 
 B)False

Question 2

SCENARIO 3-1
Health care issues are receiving much attention in both academic and political arenas.A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid.The ages of 25 senior citizens were as follows:
  
-Referring to Scenario 3-1,identify which of the following is the correct statement.

Accepted Answer

A) One fourth of the senior citizens sampled are below 64 years of age. 
B) The middle 50% of the senior citizens sampled are between 65.5 and 73.0 years of age. 
C) 25% of the senior citizens sampled are older than 81.5 years of age. 
D) All the above are correct. 
A) One fourth of the senior citizens sampled are below 64 years of age. 
B) The middle 50% of the senior citizens sampled are between 65.5 and 73.0 years of age. 
C) 25% of the senior citizens sampled are older than 81.5 years of age. 
D) All the above are correct.

Question 3

In exploratory data analysis,a boxplot can be used to illustrate the median,quartiles,and extreme values.

Accepted Answer

A) True 
 B)False

Question 4

The 12-month rate of returns over a three-year period of a stock is 0.099,-0.289,and 0.089.The geometric mean rate of return per year for this stock is_____ .

Accepted Answer

The answer of The 12-month rate of returns over a...

Question 5

SCENARIO 3-7
In a recent academic year,many public universities in the United States raised tuition and fees due to a decrease in state subsidies.The change in the cost of tuition,a shared dormitory room,and the most popular meal plan from the previous academic year for a sample of 10 public universities were as follows: $1,589,$593,$1,223,$869,$423,$1,720,$708,$1425,$922 and $308.
-Referring to Scenario 3-7,is the change in the cost right- or left-skewed?

Accepted Answer

The answer of SCENARIO 3-7
In a recent academic year,many public...

Question 6

Which of the following statements about the median is not true?

Accepted Answer

A) It is more affected by extreme values than the arithmetic mean. 
B) It is a measure of central tendency. 
C) It is equal to Q2. 
D) It is equal to the mode in bell-shaped "normal" distributions. 
A) It is more affected by extreme values than the arithmetic mean. 
B) It is a measure of central tendency. 
C) It is equal to Q2. 
D) It is equal to the mode in bell-shaped "normal" distributions.

Question 7

SCENARIO 3-11
Given below are the closing prices for the Dow Jones Industrial Average (DJIA)and the Standard & Poor's (S&P)500 Index over 10-weeks sometime in the past.
  
-Referring to Scenario 3-11,you will expect an increase in the DJIA to be associated with

Accepted Answer

A) an increase in the S&P 500 index 
B) a decrease in the S&P 500 index 
C) no predictable change in the DJIA 
D) no predictable change in the S&P 500 index 
A) an increase in the S&P 500 index 
B) a decrease in the S&P 500 index 
C) no predictable change in the DJIA 
D) no predictable change in the S&P 500 index

Question 8

SCENARIO 3-1
Health care issues are receiving much attention in both academic and political arenas.A sociologist recently conducted a survey of citizens over 60 years of age whose net worth is too high to qualify for Medicaid.The ages of 25 senior citizens were as follows:
  
-Referring to Scenario 3-1,calculate the kurtosis statistic for the age of the senior citizens accurate to two decimal places.

Accepted Answer

The answer of SCENARIO 3-1
Health care issues are receiving much...

Question 9

The five-number summary consists of the smallest value,the first quartile,the median,the third quartile,and the largest value.

Accepted Answer

A) True 
 B)False

Question 10

SCENARIO 3-3
The ordered array below represents the number of vitamin supplements sold by a health food store in
a sample of 16 days.
19, 19, 20, 20, 22, 23, 25, 26, 27, 30, 33, 34, 35, 36, 38, 41
Note: For this sample, the sum of the values is 448, and the sum of the squared differences between
each value and the mean is 812.
-Referring to Scenario 3-3,is the number of vitamin supplements sold in this sample leptokurtic or platykurtic?

Accepted Answer

The answer of SCENARIO 3-3
The ordered array below represents the...

Question 11

As a rule,a value is considered an extreme value if its Z score is less than 3.

Accepted Answer

A) True 
 B)False

Question 12

As a rule,a value is considered an extreme value if its Z score is greater than 3.

Accepted Answer

A) True 
 B)False

Question 13

In a right-skewed distribution

Accepted Answer

A) the median equals the arithmetic mean. 
B) the median is less than the arithmetic mean. 
C) the median is greater than the arithmetic mean. 
D) none of the above. 
A) the median equals the arithmetic mean. 
B) the median is less than the arithmetic mean. 
C) the median is greater than the arithmetic mean. 
D) none of the above.

Question 14

SCENARIO 3-5
The rate of return of a Fortune 500 company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%,7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34%
-Referring to Scenario 3-4,the first quartile of the customs data is_____ .

Accepted Answer

The answer of SCENARIO 3-5
The rate of return of a...

Question 15

Which measure of central tendency can be used for both numerical and categorical variables?

Accepted Answer

A) Arithmetic mean. 
B) Median. 
C) Mode. 
D) Geometric mean. 
A) Arithmetic mean. 
B) Median. 
C) Mode. 
D) Geometric mean.

Question 16

According to the empirical rule,if the data form a "bell-shaped" normal distribution,percent of the observations will be contained within 3 standard deviations around the arithmetic mean.

Accepted Answer

A) 68.26 
B) 75.00 
C) 95.0 
D) 99.7 
A) 68.26 
B) 75.00 
C) 95.0 
D) 99.7

Question 17

SCENARIO 3-13
Energy drink consumption has continued to gain in popularity since the 1997 debut of Red Bull,the current leader in the energy drink market.Given below are the exam scores and the number of 12- ounce energy drinks consumed within a week prior to the exam of 10 college students.
  
-Referring to Scenario 3-13,how will you classify the linear relationship between the exam scores and the number of energy drinks consumed?

Accepted Answer

A) Weak 
B) Moderate 
C) Strong 
D) No relationship 
A) Weak 
B) Moderate 
C) Strong 
D) No relationship

Question 18

You were told that the 1st,2nd and 3rd quartiles of female students' weight at a major university are 95 lbs. ,125 lbs. ,and 138 lbs...What percentage of the students weigh between 95 and 138 lbs...?

Accepted Answer

Question 19

SCENARIO 3-12
Given below are the rating and performance scores of 15 laptop computers.
  
-Referring to Scenario 3-12,what is the sample covariance between the performance scores and the rating?

Accepted Answer

The answer of SCENARIO 3-12
Given below are the rating and...

Question 20

SCENARIO 3-3
The ordered array below represents the number of vitamin supplements sold by a health food store in
a sample of 16 days.
19, 19, 20, 20, 22, 23, 25, 26, 27, 30, 33, 34, 35, 36, 38, 41
Note: For this sample, the sum of the values is 448, and the sum of the squared differences between
each value and the mean is 812.
-Referring to Scenario 3-2,is the carbohydrate amount in the cereal leptokurtic or platykurtic?

Accepted Answer

The answer of SCENARIO 3-3
The ordered array below represents the...

The larger the Z score,the farther is the distance from the value to the median.

In exploratory data analysis,a boxplot can be used to illustrate the median,quartiles,and extreme values.

The 12-month rate of returns over a three-year period of a stock is 0.099,-0.289,and 0.089.The geometric mean rate of return per year for this stock is_____ .

Which of the following statements about the median is not true?

SCENARIO 3-11 Given below are the closing prices for the Dow Jones Industrial Average (DJIA)and the Standard & Poor's (S&P)500 Index over 10-weeks sometime in the past. -Referring to Scenario 3-11,you will expect an increase in the DJIA to be associated with

The five-number summary consists of the smallest value,the first quartile,the median,the third quartile,and the largest value.

As a rule,a value is considered an extreme value if its Z score is less than 3.

As a rule,a value is considered an extreme value if its Z score is greater than 3.

In a right-skewed distribution

SCENARIO 3-5 The rate of return of a Fortune 500 company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%,7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34% -Referring to Scenario 3-4,the first quartile of the customs data is_____ .

Which measure of central tendency can be used for both numerical and categorical variables?

According to the empirical rule,if the data form a "bell-shaped" normal distribution,percent of the observations will be contained within 3 standard deviations around the arithmetic mean.

You were told that the 1^st,2^nd and 3^rd quartiles of female students' weight at a major university are 95 lbs. ,125 lbs. ,and 138 lbs...What percentage of the students weigh between 95 and 138 lbs...?

SCENARIO 3-12 Given below are the rating and performance scores of 15 laptop computers. -Referring to Scenario 3-12,what is the sample covariance between the performance scores and the rating?

Defining and Collecting Data

Organizing and Visualizing Variables

Basic Probability

Discrete Probability Distributions

The Normal Distribution and Other Continuous Distributions

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square and Nonparametric Tests

Simple Linear Regression

Introduction to Multiple Regression

Multiple Regression Model Building

Time-Series Forecasting

Business Analytics

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Getting Started: Important Things to Learn First

Binomial Distribution and Normal Approximation

Filters

Exam 3: Numerical Descriptive Measures

The larger the Z score,the farther is the distance from the value to the median.

In exploratory data analysis,a boxplot can be used to illustrate the median,quartiles,and extreme values.

The 12-month rate of returns over a three-year period of a stock is 0.099,-0.289,and 0.089.The geometric mean rate of return per year for this stock is_____ .

Which of the following statements about the median is not true?

SCENARIO 3-11 Given below are the closing prices for the Dow Jones Industrial Average (DJIA)and the Standard & Poor's (S&P)500 Index over 10-weeks sometime in the past. -Referring to Scenario 3-11,you will expect an increase in the DJIA to be associated with

The five-number summary consists of the smallest value,the first quartile,the median,the third quartile,and the largest value.

As a rule,a value is considered an extreme value if its Z score is less than 3.

As a rule,a value is considered an extreme value if its Z score is greater than 3.

In a right-skewed distribution

SCENARIO 3-5 The rate of return of a Fortune 500 company over the past 15 years are: 3.17%, 4.43%, 5.93%, 5.43%,7.29%, 8.21%, 6.23%, 5.23%, 4.34%, 6.68%, 7.14%, -5.56%, -5.23%, -5.73%, -10.34% -Referring to Scenario 3-4,the first quartile of the customs data is_____ .

Which measure of central tendency can be used for both numerical and categorical variables?

According to the empirical rule,if the data form a "bell-shaped" normal distribution,percent of the observations will be contained within 3 standard deviations around the arithmetic mean.

You were told that the 1st,2nd and 3rd quartiles of female students' weight at a major university are 95 lbs. ,125 lbs. ,and 138 lbs...What percentage of the students weigh between 95 and 138 lbs...?

SCENARIO 3-12 Given below are the rating and performance scores of 15 laptop computers. -Referring to Scenario 3-12,what is the sample covariance between the performance scores and the rating?

Defining and Collecting Data

Organizing and Visualizing Variables

Basic Probability

Discrete Probability Distributions

The Normal Distribution and Other Continuous Distributions

Sampling Distributions

Confidence Interval Estimation

Fundamentals of Hypothesis Testing: One-Sample Tests

Two-Sample Tests

Analysis of Variance

Chi-Square and Nonparametric Tests

Simple Linear Regression

Introduction to Multiple Regression

Multiple Regression Model Building

Time-Series Forecasting

Business Analytics

A Roadmap for Analyzing Data

Statistical Applications in Quality Management

Decision Making

Getting Started: Important Things to Learn First

Binomial Distribution and Normal Approximation

Filters

You were told that the 1^st,2^nd and 3^rd quartiles of female students' weight at a major university are 95 lbs. ,125 lbs. ,and 138 lbs...What percentage of the students weigh between 95 and 138 lbs...?