Question 1

The ______________________ shows the number of data items with values less than or equal to the upper class limit of each class.

Accepted Answer

A) cumulative frequency distribution 
B) frequency distribution 
C) percent frequency distribution 
D) relative frequency distribution 
A) cumulative frequency distribution 
B) frequency distribution 
C) percent frequency distribution 
D) relative frequency distribution

Question 2

The College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored greater than 700.

Accepted Answer

A) 97.5% 
B) 95% 
C) ​2.5% 
D) ​5% 
A) 97.5% 
B) 95% 
C) ​2.5% 
D) ​5%

Question 3

Compute the third quartile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

Accepted Answer

A) 21.25 
B) 15.5 
C) 21.5 
D) 11.75 
A) 21.25 
B) 15.5 
C) 21.5 
D) 11.75

Question 4

Which Excel command will return all modes when more than one mode exists? ​​

Accepted Answer

A) MODE.MULT 
B) ​MODE.SNGL 
C) MODE 
D) MODES 
A) MODE.MULT 
B) ​MODE.SNGL 
C) MODE 
D) MODES

Question 5

The data on the time taken by 10 students in a class to complete an exam is an example of what type of data?

Accepted Answer

A) Cannot be determined 
B) Categorical data 
C) Time series data 
D) Quantitative data 
A) Cannot be determined 
B) Categorical data 
C) Time series data 
D) Quantitative data

Question 6

Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. David has a score of 52 on Ms. Bond's test. Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 6. Steven has a score of 52 on Ms. Nash's test. Which student has the higher standardized score?

Accepted Answer

A) David's standardized score is -1.64 and Steven's standardized scores -2.00. Therefore, David has the higher standardized score. 
B) David's standardized score is -1.64 and Steven's standardized scores -2.00. Therefore, Steven has the higher standardized score. 
C) ​David's standardized score is 1.64 and Steven's standardized scores 2.00. Therefore, Steven has the higher standardized score. 
D) ​Cannot be determined with the information provided. 
A) David's standardized score is -1.64 and Steven's standardized scores -2.00. Therefore, David has the higher standardized score. 
B) David's standardized score is -1.64 and Steven's standardized scores -2.00. Therefore, Steven has the higher standardized score. 
C) ​David's standardized score is 1.64 and Steven's standardized scores 2.00. Therefore, Steven has the higher standardized score. 
D) ​Cannot be determined with the information provided.

Question 7

Consider a sample on the waiting times (in minutes) at the billing counter in a grocery store to be 15, 24, 18, 15, 21, 20, 15, 22, 19, 16, 15, 22, 20, 15, and 21. Compute the mean, median, and mode.

Accepted Answer

Mean = 18.

Question 8

Which of the following gives the proportion of items in each bin?

Accepted Answer

A) Frequency 
B) Class size 
C) Relative frequency 
D) Bin proportion 
A) Frequency 
B) Class size 
C) Relative frequency 
D) Bin proportion

Question 9

What is the relative frequency for Devon Pride? ? $$\begin{array}{l}
2015 \text { Contest Sales }\
\begin{array} { l | c | c } 
\hline \text { Salesman } & \text { Frequency } & \text { Relative Frequency } \
\hline \text { Frances Clonts } & 15 & 0.05 \
\text { Sarah Leigh } & 184 & 0.62 \
\text { Devon Pride } & 37 & \
\text { John Townes } & 62 & 0.21 \
\hline \text { Total } & 298 &
\end{array}
\end{array}$$ ?

Accepted Answer

A) 0.12 
B) 99.12 
C) 0.88 
D) Not enough information 
A) 0.12 
B) 99.12 
C) 0.88 
D) Not enough information

Question 10

The College Board reported that, in 2014, the mean Math Level 2 SAT subject test score was 686 with a standard deviation of 96. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored less than 494.

Accepted Answer

A) 97.5% 
B) 95% 
C) ​2.5% 
D) ​5% 
A) 97.5% 
B) 95% 
C) ​2.5% 
D) ​5%

Question 11

The mentor of a class researched the number of hours spent on study in a week by each student of the class in order to analyze the correlation between the study hours and the marks obtained by each student. The data on the hours spent per week by 25 students are listed below. $$\begin{array} { l l l l l } 
13 & 14 & 16 & 15 & 12 \
12 & 19 & 21 & 22 & 19 \
13 & 16 & 18 & 25 & 21 \
17 & 18 & 23 & 16 & 12 \
24 & 20 & 14 & 22 & 15
\end{array}$$ 
a. What is the least amount of time a student spent per week on studying in this sample? The highest?
b. Use a class width of 2 hours to prepare a frequency distribution, a relative frequency distribution, and a percent frequency distribution for the data.
c. Prepare a histogram and comment on the shape of the distribution.

Accepted Answer

a. The least time a student sp

Question 12

The difference between the largest and the smallest data values is the __________.
​

Accepted Answer

The answer of The difference between the largest and the...

Question 13

The goal regarding using an appropriate number of bins is to show the

Accepted Answer

A) number of observations. 
B) number of variables. 
C) variation in the data. 
D) correlation in the data. 
A) number of observations. 
B) number of variables. 
C) variation in the data. 
D) correlation in the data.

Question 14

Compute the IQR for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

Accepted Answer

A) 6.25 
B) 7.75 
C) 5.14 
D) 9.50 
A) 6.25 
B) 7.75 
C) 5.14 
D) 9.50

Question 15

The results of a survey showed that, on average, children spend 5.6 hours at PlayStation per week. Suppose that the standard deviation is 1.7 hours and that the number of hours at PlayStation follows a bell-shaped distribution.
a. Use the empirical rule to calculate the percentage of children who spend between 2.2 and 9 hours at PlayStation per week.
b. What is the z-value for a child who spends 7.5 hours at PlayStation per week?
c. What is the z-value for a child who spends 4.5 hours at PlayStation per week?

Accepted Answer

​
a. According to the empirical rule, ap

Question 16

The variance is based on the

Accepted Answer

A) deviation about the median. 
B) number of variables. 
C) deviation about the mean. 
D) correlation in the data. 
A) deviation about the median. 
B) number of variables. 
C) deviation about the mean. 
D) correlation in the data.

Question 17

Compute the relative frequencies for students who earned a C shown in the table of grades below. ? $$\begin{array} { l | c } 
\text { Grades } & \text { Number of Students } \
\hline \text { A } & 10 \
B & 31 \
C & 36 \
D & 6 \
\hline & \mathbf { 8 3 }
\end{array}$$ ?

Accepted Answer

A) 0.43 
B) 0.53 
C) ?0.83 
D) Not enough information 
A) 0.43 
B) 0.53 
C) ?0.83 
D) Not enough information

Question 18

James's manager asked him to sort the last names in the following list in descending order. What does this mean? ? \(\begin{array}{llllrlclr}
\text { Customer ID }&\text {First}&\text { Last }&\text {Sales }&\text {Quantity}&\text { Discount }&\text {Profit }\
\text { CG-12520 } & \text { Claire } & \text { Gute } & \$ 261.96 & 2 & 0 & \$  41.91 \
\text { DV-13045 } & \text { Darrin } & \text { VanHuff } & \$  14.62 & 2 & 0 & \$  16.87 \
\text { SO-20335 } & \text { Sean } & \text { O'Donnell } & \$ 9557.58 & 5 & 0.45 & \$  (383.03) \
\text { BH-11710 } & \text { Brosina } & \text { Hoffman } & \$  48.86 & 7 & 0 & \$  14.17 \
\text { AA-10480 } & \text { Andrew } & \text { Allen } & \$  25.55 & 3 & 0.2 & \$  5.44 \
\text { IM-15070 } & \text { Irene } & \text { Maddox } & \$ 407.98 & 3 & 0.2 & \$  132.59 \
\text { HP-14815 } & \text { Harold } & \text { Pawlan } & \$  68.81 & 5 & 0.8 & \$(123.86) \
\text { PK-19075 } & \text { Pete } & \text { Kriz } & \$ 665.88 & 6 & 0 & \$  13.32 \
\text { AG-10270 } & \text { Alejandro Grove } & \$  55.50 & 2 & 0 & \$  9.99 \
\text { ZD-21925 } & \text { Zuschuss } & \text { Donatelli } & \$  8.56 & 2 & 0 & \$  2.48
\end{array}\) ?
?

Accepted Answer

A) ?The last names must be sorted from A to Z. 
B) ?The last names must be sorted from Z to A. 
C) ?The last names must be sorted from the earliest to the latest that has been added to the list. 
D) ?James should use the Sort function to organize the data into order of sales. 
A) ?The last names must be sorted from A to Z. 
B) ?The last names must be sorted from Z to A. 
C) ?The last names must be sorted from the earliest to the latest that has been added to the list. 
D) ?James should use the Sort function to organize the data into order of sales.

Question 19

Data collected from several entities over a period of time (minutes, hours, days, etc.) are called

Accepted Answer

A) categorical and quantitative data. 
B) time series data. 
C) source data. 
D) cross-sectional data. 
A) categorical and quantitative data. 
B) time series data. 
C) source data. 
D) cross-sectional data.

Question 20

Compute the geometric mean for the following data on growth factors of an investment for 10 years. 1.10, 0.50, 0.70, 1.21, 1.25, 1.12, 1.16, 1.11, 1.13, 1.22

Accepted Answer

A) 1.0221 
B) 1.0148 
C) 1.0363 
D) 1.1475 
A) 1.0221 
B) 1.0148 
C) 1.0363 
D) 1.1475

The ______________________ shows the number of data items with values less than or equal to the upper class limit of each class.

Compute the third quartile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

Which Excel command will return all modes when more than one mode exists?

The data on the time taken by 10 students in a class to complete an exam is an example of what type of data?

Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. David has a score of 52 on Ms. Bond's test. Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 6. Steven has a score of 52 on Ms. Nash's test. Which student has the higher standardized score?

Consider a sample on the waiting times (in minutes) at the billing counter in a grocery store to be 15, 24, 18, 15, 21, 20, 15, 22, 19, 16, 15, 22, 20, 15, and 21. Compute the mean, median, and mode.

Which of the following gives the proportion of items in each bin?

What is the relative frequency for Devon Pride? ? 2015 Contest Sales Salesman Frequency Relative Frequency Frances Clonts 15 0.05 Sarah Leigh 184 0.62 Devon Pride 37 John Townes 62 0.21 Total 298 ?

The College Board reported that, in 2014, the mean Math Level 2 SAT subject test score was 686 with a standard deviation of 96. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored less than 494.

The difference between the largest and the smallest data values is the __________.

The goal regarding using an appropriate number of bins is to show the

Compute the IQR for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

The variance is based on the

Compute the relative frequencies for students who earned a C shown in the table of grades below. ? Grades Number of Students A 10 B 31 C 36 D 6 ?

Data collected from several entities over a period of time (minutes, hours, days, etc.) are called

Compute the geometric mean for the following data on growth factors of an investment for 10 years. 1.10, 0.50, 0.70, 1.21, 1.25, 1.12, 1.16, 1.11, 1.13, 1.22

Introduction

Data Visualization

Descriptive Data Mining

Probability: an Introduction to Modeling Uncertainty

Statistical Inference

Linear Regression

Time Series Analysis and Forecasting

Predictive Data Mining

Spreadsheet Models

Linear Optimization Models

Integer Linear Optimization Models

Nonlinear Optimization Models

Monte Carlo Simulation

Decision Analysis

Filters

Exam 2: Descriptive Statistics

The ______________________ shows the number of data items with values less than or equal to the upper class limit of each class.

Compute the third quartile for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

Which Excel command will return all modes when more than one mode exists? ​​

The data on the time taken by 10 students in a class to complete an exam is an example of what type of data?

Scores on Ms. Bond's test have a mean of 70 and a standard deviation of 11. David has a score of 52 on Ms. Bond's test. Scores on Ms. Nash's test have a mean of 64 and a standard deviation of 6. Steven has a score of 52 on Ms. Nash's test. Which student has the higher standardized score?

Consider a sample on the waiting times (in minutes) at the billing counter in a grocery store to be 15, 24, 18, 15, 21, 20, 15, 22, 19, 16, 15, 22, 20, 15, and 21. Compute the mean, median, and mode.

Which of the following gives the proportion of items in each bin?

What is the relative frequency for Devon Pride? ? 2015 Contest Sales Salesman Frequency Relative Frequency Frances Clonts 15 0.05 Sarah Leigh 184 0.62 Devon Pride 37 John Townes 62 0.21 Total 298 ?

The College Board reported that, in 2014, the mean Math Level 2 SAT subject test score was 686 with a standard deviation of 96. Assuming scores follow a bell-shaped distribution, use the empirical rule to find the percentage of students who scored less than 494.

The difference between the largest and the smallest data values is the __________. ​

The goal regarding using an appropriate number of bins is to show the

Compute the IQR for the following data. 10, 15, 17, 21, 25, 12, 16, 11, 13, 22

The variance is based on the

Compute the relative frequencies for students who earned a C shown in the table of grades below. ? Grades Number of Students A 10 B 31 C 36 D 6 ?

Data collected from several entities over a period of time (minutes, hours, days, etc.) are called

Compute the geometric mean for the following data on growth factors of an investment for 10 years. 1.10, 0.50, 0.70, 1.21, 1.25, 1.12, 1.16, 1.11, 1.13, 1.22

Introduction

Data Visualization

Descriptive Data Mining

Probability: an Introduction to Modeling Uncertainty

Statistical Inference

Linear Regression

Time Series Analysis and Forecasting

Predictive Data Mining

Spreadsheet Models

Linear Optimization Models

Integer Linear Optimization Models

Nonlinear Optimization Models

Monte Carlo Simulation

Decision Analysis

Filters

Which Excel command will return all modes when more than one mode exists?

The difference between the largest and the smallest data values is the __________.