Question 1

The standard deviation for the population is denoted as ________.

Accepted Answer

A) μ 
B) Ω 
C) s 
D) σ 
A) μ 
B) Ω 
C) s 
D) σ

Question 2

The coefficient of variation (CV)provides a relative measure of the dispersion in data relative to the mean.

Accepted Answer

A) True 
 B)False

Question 3

The ________ is the average of the largest and smallest values in the data set.

Accepted Answer

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

Question 4

According to the empirical rules,approximately 99.7% of the observations will fall within ________.

Accepted Answer

A) one standard deviation of the mean 
B) two standard deviations of the mean 
C) three standard deviations of the mean 
D) four standard deviations of the mean 
A) one standard deviation of the mean 
B) two standard deviations of the mean 
C) three standard deviations of the mean 
D) four standard deviations of the mean

Question 5

________ refers to a collection of quantitative measures and ways of describing data.

Accepted Answer

A) Statistical inference 
B) Descriptive statistics 
C) Frequency distribution 
D) Categorical data 
A) Statistical inference 
B) Descriptive statistics 
C) Frequency distribution 
D) Categorical data

Question 6

The range of the middle 50% of the data is called the ________.

Accepted Answer

A) midrange 
B) interquartile range 
C) variance 
D) mode 
A) midrange 
B) interquartile range 
C) variance 
D) mode

Question 7

The correlation coefficient is a number between ________.

Accepted Answer

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

Question 8

According to the empirical rules,approximately 95% of the observations will fall within ________.

Accepted Answer

A) one standard deviation of the mean 
B) two standard deviations of the mean 
C) three standard deviations of the mean 
D) four standard deviations of the mean 
A) one standard deviation of the mean 
B) two standard deviations of the mean 
C) three standard deviations of the mean 
D) four standard deviations of the mean

Question 9

In a box-and-whisker plot,the whiskers represent the ________.

Accepted Answer

A) Q1 and Q3 
B) minimum and maximum values 
C) median and mode 
D) cumulative frequencies 
A) Q1 and Q3 
B) minimum and maximum values 
C) median and mode 
D) cumulative frequencies

Question 10

A negative correlation coefficient indicates a linear relationship between variables where one variable increases as the other increases.

Accepted Answer

A) True 
 B)False

Question 11

Outliers defined as being between 1.5*IQR and 3*IQR to the left of Q1 or to the right of Q3 are considered ________.

Accepted Answer

A) weak 
B) extreme 
C) mild 
D) statistically significant 
A) weak 
B) extreme 
C) mild 
D) statistically significant

Question 12

In a box plot,the line inside the box represents the ________.

Accepted Answer

A) mean 
B) median 
C) mode 
D) range 
A) mean 
B) median 
C) mode 
D) range

Question 13

The sum of relative frequencies will always equal ________.

Accepted Answer

A) 100 
B) 1.0 
C) 10 
D) 0.01 
A) 100 
B) 1.0 
C) 10 
D) 0.01

Question 14

The proportion of the total sample that falls at or below the upper limit value is represented by ________.

Accepted Answer

A) dispersion 
B) cumulative relative frequency 
C) median 
D) standard deviation 
A) dispersion 
B) cumulative relative frequency 
C) median 
D) standard deviation

Question 15

Sketch a bimodal distribution.

Accepted Answer

The answer of Sketch a bimodal distribution....

Question 16

The sample mean is represented by ________.

Accepted Answer

A)    
B) α 
C) μ 
D) η 
A)    
B) α 
C) μ 
D) η

Question 17

Box-and-whisker plots graphically display five key statistics of a data set: the minimum,first quartile,mean,third quartile,and maximum.

Accepted Answer

A) True 
 B)False

Question 18

The formula used for calculating the variance of a population is different from that used for calculating the variance of a sample.

Accepted Answer

A) True 
 B)False

Question 19

When more of the mass of the data is concentrated on one side and the distribution of values tails off to the other side,the histogram is said to be ________.

Accepted Answer

A) symmetric 
B) skewed 
C) curved 
D) positively sloped 
A) symmetric 
B) skewed 
C) curved 
D) positively sloped

Question 20

Which of the following provides an estimate that represents "centering" of the entire set of data?

Accepted Answer

A) range 
B) variance 
C) midrange 
D) standard deviation 
A) range 
B) variance 
C) midrange 
D) standard deviation

The standard deviation for the population is denoted as ________.

The coefficient of variation (CV)provides a relative measure of the dispersion in data relative to the mean.

The ________ is the average of the largest and smallest values in the data set.

According to the empirical rules,approximately 99.7% of the observations will fall within ________.

________ refers to a collection of quantitative measures and ways of describing data.

The range of the middle 50% of the data is called the ________.

The correlation coefficient is a number between ________.

According to the empirical rules,approximately 95% of the observations will fall within ________.

In a box-and-whisker plot,the whiskers represent the ________.

A negative correlation coefficient indicates a linear relationship between variables where one variable increases as the other increases.

Outliers defined as being between 1.5IQR and 3IQR to the left of Q₁or to the right of Q₃ are considered ________.

In a box plot,the line inside the box represents the ________.

The sum of relative frequencies will always equal ________.

The proportion of the total sample that falls at or below the upper limit value is represented by ________.

Sketch a bimodal distribution.

The sample mean is represented by ________.

Box-and-whisker plots graphically display five key statistics of a data set: the minimum,first quartile,mean,third quartile,and maximum.

The formula used for calculating the variance of a population is different from that used for calculating the variance of a sample.

When more of the mass of the data is concentrated on one side and the distribution of values tails off to the other side,the histogram is said to be ________.

Which of the following provides an estimate that represents "centering" of the entire set of data?

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 standard deviation for the population is denoted as ________.

The coefficient of variation (CV)provides a relative measure of the dispersion in data relative to the mean.

The ________ is the average of the largest and smallest values in the data set.

According to the empirical rules,approximately 99.7% of the observations will fall within ________.

________ refers to a collection of quantitative measures and ways of describing data.

The range of the middle 50% of the data is called the ________.

The correlation coefficient is a number between ________.

According to the empirical rules,approximately 95% of the observations will fall within ________.

In a box-and-whisker plot,the whiskers represent the ________.

A negative correlation coefficient indicates a linear relationship between variables where one variable increases as the other increases.

Outliers defined as being between 1.5*IQR and 3*IQR to the left of Q1 or to the right of Q3 are considered ________.

In a box plot,the line inside the box represents the ________.

The sum of relative frequencies will always equal ________.

The proportion of the total sample that falls at or below the upper limit value is represented by ________.

Sketch a bimodal distribution.

The sample mean is represented by ________.

Box-and-whisker plots graphically display five key statistics of a data set: the minimum,first quartile,mean,third quartile,and maximum.

The formula used for calculating the variance of a population is different from that used for calculating the variance of a sample.

When more of the mass of the data is concentrated on one side and the distribution of values tails off to the other side,the histogram is said to be ________.

Which of the following provides an estimate that represents "centering" of the entire set of data?

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

Outliers defined as being between 1.5IQR and 3IQR to the left of Q₁or to the right of Q₃ are considered ________.