Question 1

The interquartile range is IQR = Q3 - Q1. Thus, it can be thought of as

Accepted Answer

A)  the 75% interquartile range. 
B)  the quartile or 25% of the variable. 
C)  the middle 50% of the variable. 
D)  the incorporation of all observations. 
A)  the 75% interquartile range. 
B)  the quartile or 25% of the variable. 
C)  the middle 50% of the variable. 
D)  the incorporation of all observations. C

Question 2

Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 4 intervals. The minimum and maximum for the variable are -31.1 and 65.42 respectfully. Calculate the width of each interval for Bill.

Accepted Answer

A)  16.355 
B)  7.775 
C)  24.130 
D)  -24.130 
A)  16.355 
B)  7.775 
C)  24.130 
D)  -24.130 C

Question 3

The degree of strength of the linear relationship between x and y is called?

Accepted Answer

A)  correlation determination 
B)  index 
C)  standard deviation 
D)  correlation coefficient 
A)  correlation determination 
B)  index 
C)  standard deviation 
D)  correlation coefficient D

Question 4

Carmen is a professor at a local university. In collecting data on her Introduction to Business course for a year, she wants to calculate the z-score for a student who scores a 90 on the final exam. The mean and the standard deviation scores on the exam are 76 and 6, respectively. Calculate the z-score.

Accepted Answer

A)  1.33 
B)  2.33 
C)  0.33 
D)  2.67 
A)  1.33 
B)  2.33 
C)  0.33 
D)  2.67

Question 5

When working with numerical variables, the frequency distribution is equal to the number of observations that falls into each interval.

Accepted Answer

A) True 
 B)False

Question 6

Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 5 intervals. The minimum and maximum for the variable are -32.4 and 65.42 respectfully. Calculate the width of each interval for Bill.

Accepted Answer

A)  13.084 
B)  6.604 
C)  19.564 
D)  -19.564 
A)  13.084 
B)  6.604 
C)  19.564 
D)  -19.564

Question 7

The following table is the summary statistics for Scores. Calculate the Sharpe ratio of growth. Assume Rf = 4.

Accepted Answer

A)  3.699 
B)  1.232 
C)  6.472 
D)  5.438 
A)  3.699 
B)  1.232 
C)  6.472 
D)  5.438

Question 8

Find the Mean Absolute Deviation (MAD) of 10, 9, 7, 9, 10.

Accepted Answer

A)  2.0 
B)  0.80 
C)  9.0 
D)  1.0 
A)  2.0 
B)  0.80 
C)  9.0 
D)  1.0

Question 9

A scatterplot with a categorical variable allows for the dynamic view of the addition of a categorical variable to the numeric plot points adding an additional layer of visible detail.

Accepted Answer

A) True 
 B)False

Question 10

Alex is working on an investment portfolio reviewing Gas and Diesel summary statistics. Which investment would be the better risk per unit, assuming Rf = 2?

Accepted Answer

A)  Gas provides a higher Sharpe ratio with 32.5607, thus more reward per unit of risk. 
B)  Gas provides a higher Sharpe ratio with 73.9700, thus more reward per unit of risk. 
C)  Diesel provides a higher Sharpe ratio with 153.8165, thus more reward per unit of risk. 
D)  Diesel provides a higher Sharpe ratio with 42.5738, thus more reward per unit of risk. 
A)  Gas provides a higher Sharpe ratio with 32.5607, thus more reward per unit of risk. 
B)  Gas provides a higher Sharpe ratio with 73.9700, thus more reward per unit of risk. 
C)  Diesel provides a higher Sharpe ratio with 153.8165, thus more reward per unit of risk. 
D)  Diesel provides a higher Sharpe ratio with 42.5738, thus more reward per unit of risk.

Question 11

Using the following table, what is the percent of the relative frequency of a Blue car being observed?

Accepted Answer

A)  22.06% 
B)  2.206% 
C)  21.000% 
D)  0.221% 
A)  22.06% 
B)  2.206% 
C)  21.000% 
D)  0.221%

Question 12

In a scatter plot diagram, if there is no discernable pattern, then there is a positive relationship between the numerical variables.

Accepted Answer

A) True 
 B)False

Question 13

As observations become more dispersed, the difference between the minimum and maximum observation of a variable is called __________.

Accepted Answer

A)  the range 
B)  the variable 
C)  the interquartile 
D)  the mean absolute deviation 
A)  the range 
B)  the variable 
C)  the interquartile 
D)  the mean absolute deviation

Question 14

Marin produced the following histogram based on his observations on the age of players willing to sample a video game. He then organized the age into frequencies and interval width of the respective intervals. Based on the results, which range has the best frequency for future video game sampling?

Accepted Answer

A)  16-18 
B)  19-22 
C)  23-25 
D)  8-10 
A)  16-18 
B)  19-22 
C)  23-25 
D)  8-10

Question 15

The mean credit score is 640 out of 300 used car loan applicants with a standard deviation of 16. Assuming a bell-shaped curve, what is the number of loan applicants that fall within a score of 608 and 672?

Accepted Answer

A)  96 
B)  204 
C)  285 
D)  300 
A)  96 
B)  204 
C)  285 
D)  300

Question 16

In analyzing the S&P 500 and the XYZ Inc. in a five-year study, the covariance (S&P 500, XYZ Inc.) is 9,107.30. What kind of linear relationship does the S&P 500 and the XYZ Inc. have?

Accepted Answer

A)  a negative linear relationship 
B)  a positive linear relationship 
C)  no linear relationship 
D)  a neutral linear relationship 
A)  a negative linear relationship 
B)  a positive linear relationship 
C)  no linear relationship 
D)  a neutral linear relationship

Question 17

Survey Results provided the skewness coefficient is -0.141974 and the (excess) kurtosis coefficient is 1.15926. These values imply that the return value for Survey is _______ skewed, and the distribution has a _____ tail than a normal distribution.

Accepted Answer

A)  positively; longer 
B)  positively; shorter 
C)  negatively; longer 
D)  negatively; shorter 
A)  positively; longer 
B)  positively; shorter 
C)  negatively; longer 
D)  negatively; shorter

Question 18

Using the following Boxplot, identify the median score on the test.

Accepted Answer

A)  28 
B)  68 
C)  60 
D)  90 
A)  28 
B)  68 
C)  60 
D)  90

Question 19

Central location is defined as the way numerical data tends to cluster around a middle or central value.

Accepted Answer

A) True 
 B)False

Question 20

What is the arithmetic mean in the following table on the variable score?

Accepted Answer

A)  0.92 
B)  0.88 
C)  0.765 
D)  0.8575 
A)  0.92 
B)  0.88 
C)  0.765 
D)  0.8575

The interquartile range is IQR = Q3 - Q1. Thus, it can be thought of as

Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 4 intervals. The minimum and maximum for the variable are -31.1 and 65.42 respectfully. Calculate the width of each interval for Bill.

The degree of strength of the linear relationship between x and y is called?

When working with numerical variables, the frequency distribution is equal to the number of observations that falls into each interval.

Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 5 intervals. The minimum and maximum for the variable are -32.4 and 65.42 respectfully. Calculate the width of each interval for Bill.

The following table is the summary statistics for Scores. Calculate the Sharpe ratio of growth. Assume Rf= 4.

Find the Mean Absolute Deviation (MAD) of 10, 9, 7, 9, 10.

A scatterplot with a categorical variable allows for the dynamic view of the addition of a categorical variable to the numeric plot points adding an additional layer of visible detail.

Alex is working on an investment portfolio reviewing Gas and Diesel summary statistics. Which investment would be the better risk per unit, assuming R_f = 2?

Using the following table, what is the percent of the relative frequency of a Blue car being observed?

In a scatter plot diagram, if there is no discernable pattern, then there is a positive relationship between the numerical variables.

As observations become more dispersed, the difference between the minimum and maximum observation of a variable is called __________.

Marin produced the following histogram based on his observations on the age of players willing to sample a video game. He then organized the age into frequencies and interval width of the respective intervals. Based on the results, which range has the best frequency for future video game sampling?

The mean credit score is 640 out of 300 used car loan applicants with a standard deviation of 16. Assuming a bell-shaped curve, what is the number of loan applicants that fall within a score of 608 and 672?

In analyzing the S&P 500 and the XYZ Inc. in a five-year study, the covariance (S&P 500, XYZ Inc.) is 9,107.30. What kind of linear relationship does the S&P 500 and the XYZ Inc. have?

Survey Results provided the skewness coefficient is -0.141974 and the (excess) kurtosis coefficient is 1.15926. These values imply that the return value for Survey is ___ skewed, and the distribution has a _ tail than a normal distribution.

Using the following Boxplot, identify the median score on the test.

Central location is defined as the way numerical data tends to cluster around a middle or central value.

What is the arithmetic mean in the following table on the variable score?

Introduction to Business Analytics

Data Management and Wrangling

Probability and Probability Distributions

Statistical Inference

Regression Analysis

Advanced Regression Analysis

Introduction to Data Mining

Supervised Data Mining: K-Nearest Neighbors and Naãve Bayes

Supervised Data Mining: Decision Trees

Unsupervised Data Mining

Forecasting With Time Series Data

Introduction to Prescriptive Analytics

Filters

Exam 3: Data Visualization and Summary Measures

The interquartile range is IQR = Q3 - Q1. Thus, it can be thought of as

Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 4 intervals. The minimum and maximum for the variable are -31.1 and 65.42 respectfully. Calculate the width of each interval for Bill.

The degree of strength of the linear relationship between x and y is called?

When working with numerical variables, the frequency distribution is equal to the number of observations that falls into each interval.

Bill wants to calculate the width of each interval by using the approximation formula. He first created a frequency distribution with 5 intervals. The minimum and maximum for the variable are -32.4 and 65.42 respectfully. Calculate the width of each interval for Bill.

The following table is the summary statistics for Scores. Calculate the Sharpe ratio of growth. Assume Rf = 4.

Find the Mean Absolute Deviation (MAD) of 10, 9, 7, 9, 10.

A scatterplot with a categorical variable allows for the dynamic view of the addition of a categorical variable to the numeric plot points adding an additional layer of visible detail.

Alex is working on an investment portfolio reviewing Gas and Diesel summary statistics. Which investment would be the better risk per unit, assuming Rf = 2?

Using the following table, what is the percent of the relative frequency of a Blue car being observed?

In a scatter plot diagram, if there is no discernable pattern, then there is a positive relationship between the numerical variables.

As observations become more dispersed, the difference between the minimum and maximum observation of a variable is called __________.

Marin produced the following histogram based on his observations on the age of players willing to sample a video game. He then organized the age into frequencies and interval width of the respective intervals. Based on the results, which range has the best frequency for future video game sampling?

The mean credit score is 640 out of 300 used car loan applicants with a standard deviation of 16. Assuming a bell-shaped curve, what is the number of loan applicants that fall within a score of 608 and 672?

In analyzing the S&P 500 and the XYZ Inc. in a five-year study, the covariance (S&P 500, XYZ Inc.) is 9,107.30. What kind of linear relationship does the S&P 500 and the XYZ Inc. have?

Survey Results provided the skewness coefficient is -0.141974 and the (excess) kurtosis coefficient is 1.15926. These values imply that the return value for Survey is _______ skewed, and the distribution has a _____ tail than a normal distribution.

Using the following Boxplot, identify the median score on the test.

Central location is defined as the way numerical data tends to cluster around a middle or central value.

What is the arithmetic mean in the following table on the variable score?

Introduction to Business Analytics

Data Management and Wrangling

Probability and Probability Distributions

Statistical Inference

Regression Analysis

Advanced Regression Analysis

Introduction to Data Mining

Supervised Data Mining: K-Nearest Neighbors and Naãve Bayes

Supervised Data Mining: Decision Trees

Unsupervised Data Mining

Forecasting With Time Series Data

Introduction to Prescriptive Analytics

Filters

The following table is the summary statistics for Scores. Calculate the Sharpe ratio of growth. Assume Rf= 4.

Alex is working on an investment portfolio reviewing Gas and Diesel summary statistics. Which investment would be the better risk per unit, assuming R_f = 2?

Survey Results provided the skewness coefficient is -0.141974 and the (excess) kurtosis coefficient is 1.15926. These values imply that the return value for Survey is ___ skewed, and the distribution has a _ tail than a normal distribution.