Question 1

The ________ is used to compare the variability of two or more data sets with different scales.

Accepted Answer

A) coefficient of variation 
B) variance 
C) median 
D) coefficient of skewness 
A) coefficient of variation 
B) variance 
C) median 
D) coefficient of skewness

Question 2

The ________ is the sum of all observations divided by the number of observations.

Accepted Answer

A) arithmetic mean 
B) median 
C) mode 
D) midrange 
A) arithmetic mean 
B) median 
C) mode 
D) midrange

Question 3

The formal statistical measure for categorical data is called the ________.

Accepted Answer

A) sample mean 
B) sample median 
C) sample mode 
D) sample proportion 
A) sample mean 
B) sample median 
C) sample mode 
D) sample proportion

Question 4

What does a positive correlation coefficient indicate?

Accepted Answer

A) When one variable increases,the other variable decreases. 
B) When one variable increases,the other variable also increases. 
C) When one variable decreases,the other variable remains constant. 
D) Both the variables are not linearly related. 
A) When one variable increases,the other variable decreases. 
B) When one variable increases,the other variable also increases. 
C) When one variable decreases,the other variable remains constant. 
D) Both the variables are not linearly related.

Question 5

The correlation coefficient for two variables that are not linearly related will be equal to ________.

Accepted Answer

A) 1 
B) 2 
C) 0 
D) 3 
A) 1 
B) 2 
C) 0 
D) 3

Question 6

A coefficient of skewness that indicates moderate skewness would lie between ________.

Accepted Answer

A) 1 and 2 
B) 0.5 and 1 
C) 0 and 1 
D) 0.5 and -0.5 
A) 1 and 2 
B) 0.5 and 1 
C) 0 and 1 
D) 0.5 and -0.5

Question 7

Sample proportion is usually denoted as ________.

Accepted Answer

A) sp 
B) p 
C) p2 
D) s 
A) sp 
B) p 
C) p2 
D) s

Question 8

The cumulative relative frequency represents the proportion of the total sample that falls at or below the upper limit value.

Accepted Answer

A) True 
 B)False

Question 9

Frequency distributions can only be constructed for numerical data.

Accepted Answer

A) True 
 B)False

Question 10

For a stock that displays a large standard deviation,the returns may be high but risk is high too.

Accepted Answer

A) True 
 B)False

Question 11

A histogram with only one peak ________.

Accepted Answer

A) does not have a mode value 
B) is unimodal 
C) is bimodal 
D) has a high degree of kurtosis 
A) does not have a mode value 
B) is unimodal 
C) is bimodal 
D) has a high degree of kurtosis

Question 12

________ is the quartile representing the 75th percentile.

Accepted Answer

A) Q1 
B) Q2 
C) Q3 
D) Q4 
A) Q1 
B) Q2 
C) Q3 
D) Q4

Question 13

Sketch a normal distribution and label the sections of the empirical rules.

Accepted Answer

@#IMG-DLM& According to the empirical rules: 
1.Ap

Question 14

The sample variance is denoted as ________.

Accepted Answer

A) s2 
B) v2 
C) σ2 
D) α2 
A) s2 
B) v2 
C) σ2 
D) α2

Question 15

In Microsoft Excel 2010,the function that computes the single most frequently occurring value in a set of data is ________.

Accepted Answer

A) MEDIAN(data range) 
B) MODE.SNGL(data range) 
C) STDEV.P(data range) 
D) SKEW(data range) 
A) MEDIAN(data range) 
B) MODE.SNGL(data range) 
C) STDEV.P(data range) 
D) SKEW(data range)

Question 16

A ________ displays the minimum,first quartile,median,third quartile,and maximum of a data set.

Accepted Answer

A) scatter plot 
B) contingency table 
C) box plot 
D) stacked column chart 
A) scatter plot 
B) contingency table 
C) box plot 
D) stacked column chart

Question 17

The formula to calculate kth percentile is given by ________.

Accepted Answer

A) 100/Nk + 0.05 
B) 100/Nk - 0.05 
C) Nk/100 + 0.05 
D) Nk/100 - 0.05 
A) 100/Nk + 0.05 
B) 100/Nk - 0.05 
C) Nk/100 + 0.05 
D) Nk/100 - 0.05

Question 18

A graphical depiction of a frequency distribution for numerical data in the form of a column chart is called a ________.

Accepted Answer

A) scatter plot 
B) box-and-whisker plot 
C) pie chart 
D) histogram 
A) scatter plot 
B) box-and-whisker plot 
C) pie chart 
D) histogram

Question 19

The subcategories of the variables in a contingency table must ________.

Accepted Answer

A) be mutually exclusive 
B) sum up to a total of 1 
C) be arranged in ascending order 
D) lie between 0 and 1 
A) be mutually exclusive 
B) sum up to a total of 1 
C) be arranged in ascending order 
D) lie between 0 and 1

The ________ is used to compare the variability of two or more data sets with different scales.

The ________ is the sum of all observations divided by the number of observations.

The formal statistical measure for categorical data is called the ________.

What does a positive correlation coefficient indicate?

The correlation coefficient for two variables that are not linearly related will be equal to ________.

A coefficient of skewness that indicates moderate skewness would lie between ________.

Sample proportion is usually denoted as ________.

The cumulative relative frequency represents the proportion of the total sample that falls at or below the upper limit value.

Frequency distributions can only be constructed for numerical data.

For a stock that displays a large standard deviation,the returns may be high but risk is high too.

A histogram with only one peak ________.

________ is the quartile representing the 75^th percentile.

Sketch a normal distribution and label the sections of the empirical rules.

The sample variance is denoted as ________.

In Microsoft Excel 2010,the function that computes the single most frequently occurring value in a set of data is ________.

A ________ displays the minimum,first quartile,median,third quartile,and maximum of a data set.

The formula to calculate k^th percentile is given by ________.

A graphical depiction of a frequency distribution for numerical data in the form of a column chart is called a ________.

The subcategories of the variables in a contingency table must ________.

Data and Business Decisions

Probability Concepts and Distributions

Sampling and Estimation

Hypothesis Testing and Statistical Inference

Regression Analysis

Forecasting

Introduction to Statistical Quality Control

Building and Using Decision Models

Decision Models With Uncertainty and Risk

Decisions, uncertainty, and Risk

Queues and Process Simulation Modeling

Linear Optimization

Integer, nonlinear, and Advanced Optimization Methods

Filters

Exam 2: Descriptive Statistics and Data Analysis

The ________ is used to compare the variability of two or more data sets with different scales.

The ________ is the sum of all observations divided by the number of observations.

The formal statistical measure for categorical data is called the ________.

What does a positive correlation coefficient indicate?

The correlation coefficient for two variables that are not linearly related will be equal to ________.

A coefficient of skewness that indicates moderate skewness would lie between ________.

Sample proportion is usually denoted as ________.

The cumulative relative frequency represents the proportion of the total sample that falls at or below the upper limit value.

Frequency distributions can only be constructed for numerical data.

For a stock that displays a large standard deviation,the returns may be high but risk is high too.

A histogram with only one peak ________.

________ is the quartile representing the 75th percentile.

Sketch a normal distribution and label the sections of the empirical rules.

The sample variance is denoted as ________.

In Microsoft Excel 2010,the function that computes the single most frequently occurring value in a set of data is ________.

A ________ displays the minimum,first quartile,median,third quartile,and maximum of a data set.

The formula to calculate kth percentile is given by ________.

A graphical depiction of a frequency distribution for numerical data in the form of a column chart is called a ________.

The subcategories of the variables in a contingency table must ________.

Data and Business Decisions

Probability Concepts and Distributions

Sampling and Estimation

Hypothesis Testing and Statistical Inference

Regression Analysis

Forecasting

Introduction to Statistical Quality Control

Building and Using Decision Models

Decision Models With Uncertainty and Risk

Decisions, uncertainty, and Risk

Queues and Process Simulation Modeling

Linear Optimization

Integer, nonlinear, and Advanced Optimization Methods

Filters

________ is the quartile representing the 75^th percentile.

The formula to calculate k^th percentile is given by ________.