Question 1

A histogram is said to be skewed to the left if it has a

Accepted Answer

A)  longer tail to the right 
B)  shorter tail to the right 
C)  shorter tail to the left 
D)  longer tail to the left 
A)  longer tail to the right 
B)  shorter tail to the right 
C)  shorter tail to the left 
D)  longer tail to the left

Question 2

A sample of 50 TV viewers were asked, "Should TV sponsors pull their sponsorship from programs that draw numerous viewer complaints?" Below are the results of the survey. Y = Yes; N = No; W = Without Opinion)
 $\begin{array} { l  }
N&W&N&N&Y&N&N&N&Y&N\
N&Y&N&N&N&N&N&Y&N&N\
Y&N&Y&W&N&Y&W&W&N&Y\
W&W&NB&W&Y&W&N&W&Y&W\
N&Y&N&Y&N&W&Y&Y&N&Y
\end{array}$
 
a. Construct a frequency distribution and a bar chart.
b. Construct a relative frequency distribution and a pie chart.

Accepted Answer

The answer of A sample of 50 TV viewers were...

Question 3

Exhibit 2-1
The number of hours worked per week) by 400 statistics students are shown below.
 $$\begin{array} { c c } 
\text { Number of Hours } & \text { Frequency } \
0 - 9 & 20 \
10 - 19 & 80 \
20 - 29 & 200 \
30 - 39 & 100
\end{array}$$
-Refer to Exhibit 2-1. The number of students working 19 hours or less

Accepted Answer

A)  is 80 
B)  is 100 
C)  is 180 
D)  is 300 
A)  is 80 
B)  is 100 
C)  is 180 
D)  is 300

Question 4

Twenty employees of the Ahmadi Corporation were asked if they liked or disliked the new district manager. Below you are given their responses. Let L represent liked and D represent disliked.
 $$\begin{array} { l l l l } 
L & L & D & L & D\
D & D & L & L & D\
D & L & D & D & L \
D & D & L & D& L 
\end{array}$$ 
a. Construct a frequency distribution and a bar chart.
b. Construct a relative frequency distribution and a pie chart.

Accepted Answer

The answer of Twenty employees of the Ahmadi Corporation were...

Question 5

In constructing a frequency distribution, the approximate class width is computed as

Accepted Answer

A)  largest data value - smallest data value)/number of classes 
B)  largest data value - smallest data value)/sample size 
C)  smallest data value - largest data value)/sample size 
D)  largest data value/number of classes 
A)  largest data value - smallest data value)/number of classes 
B)  largest data value - smallest data value)/sample size 
C)  smallest data value - largest data value)/sample size 
D)  largest data value/number of classes

Question 6

Exhibit 2-2
A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.
Undergraduate Major
 $$\begin{array} { l c c c c } 
\text { Graduate School } & \text { Business } & \text { Engin eering } & \text { Other s } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}$$ $$\begin{array} { l c c c c } 
\text { Graduate School } & \text { Business } & \text { Engin eering } & \text { Other s } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}$$
-Refer to Exhibit 2-2. Of those students who are majoring in business, what percentage plans to go to graduate school?

Accepted Answer

A)  27.78 
B)  8.75 
C)  70 
D)  72.22 
A)  27.78 
B)  8.75 
C)  70 
D)  72.22

Question 7

Exhibit 2-2
A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.
Undergraduate Major
 $$\begin{array} { l c c c c } 
\text { Graduate School } & \text { Business } & \text { Engin eering } & \text { Other s } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}$$ $$\begin{array} { l c c c c } 
\text { Graduate School } & \text { Business } & \text { Engin eering } & \text { Other s } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}$$
-Refer to Exhibit 2-2. What percentage of the students' undergraduate major is engineering?

Accepted Answer

A)  292 
B)  520 
C)  65 
D)  36.5 
A)  292 
B)  520 
C)  65 
D)  36.5

Question 8

The difference between the lower class limits of adjacent classes provides the

Accepted Answer

A)  number of classes 
B)  class limits 
C)  class midpoint 
D)  class width 
A)  number of classes 
B)  class limits 
C)  class midpoint 
D)  class width

Question 9

Data that provide labels or names for categories of like items are known as

Accepted Answer

A)  categorical data 
B)  quantitative data 
C)  label data 
D)  category data 
A)  categorical data 
B)  quantitative data 
C)  label data 
D)  category data

Question 10

A situation in which conclusions based upon aggregated crosstabulation are different from unaggregated crosstabulation is known as

Accepted Answer

A)  wrong crosstabulation 
B)  Simpson's rule 
C)  Simpson's paradox 
D)  aggregated crosstabulation 
A)  wrong crosstabulation 
B)  Simpson's rule 
C)  Simpson's paradox 
D)  aggregated crosstabulation

Question 11

Exhibit 2-2
A survey of 800 college seniors resulted in the following crosstabulation regarding their undergraduate major and whether or not they plan to go to graduate school.
Undergraduate Major
 $$\begin{array} { l c c c c } 
\text { Graduate School } & \text { Business } & \text { Engin eering } & \text { Other s } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}$$ $$\begin{array} { l c c c c } 
\text { Graduate School } & \text { Business } & \text { Engin eering } & \text { Other s } & \text { Total } \
\text { Yes } & 70 & 84 & 126 & 280 \
\text { No } & 182 & 208 & 130 & 520 \
\text { Total } & 252 & 292 & 256 & 800
\end{array}$$
-Refer to Exhibit 2-2. Among the students who plan to go to graduate school, what percentage indicated "Other" majors?

Accepted Answer

A)  15.75 
B)  45 
C)  54 
D)  35 
A)  15.75 
B)  45 
C)  54 
D)  35

Question 12

The SAT scores of a sample of business school students and their genders are shown below.
SAT Scores
 $$\begin{array} { l c c c c } 
\text { Gender } & \text { Lass than 20 } & \text { 20 up to 25 } & \text { 25 and more } & \text { Total } \
\text { Female } & 24 & 168 & 48 & 240 \
\text { Male } & 40 & 96 & 24 & 160 \
\text { Total } & 64 & 264 & 72 & 400
\end{array}$$ 
a. How many students scored less than 20?
b. How many students were female?
c. Of the male students, how many scored 25 or more?
d. Compute row percentages and comment on any relationship that may exist between SAT scores and gender of the individuals.
e. Compute column percentages.
 a. 64
b. 240
c. 24
d. a. 64
b. 240
c. 24
d.

Accepted Answer

SAT Scores
 @#IMG-DLM& From the above percentages

Question 13

A graphical presentation of the relationship between two variables is

Accepted Answer

A)  an ogive 
B)  a histogram 
C)  either an ogive or a histogram, depending on the type of data 
D)  a scatter diagram 
A)  an ogive 
B)  a histogram 
C)  either an ogive or a histogram, depending on the type of data 
D)  a scatter diagram

Question 14

A student has completed 20 courses in the School of Arts and Sciences. Her grades in the 20 courses are shown below.
 $$\begin{array} { l l l l } 
\mathrm { A } & \mathrm { B } & \mathrm { A } & \mathrm { B }& \mathrm { C } \
\mathrm { C } & \mathrm { C } & \mathrm { B } & \mathrm { B } & \mathrm { B } \
\mathrm { B } & \mathrm { A } & \mathrm { B } & \mathrm { B } & \mathrm { B } \
\mathrm { C } & \mathrm { B } & \mathrm { C } & \mathrm { B }& \mathrm { A } 
\end{array}$$ 
a. Develop a frequency distribution and a bar chart for her grades.
b. Develop a relative frequency distribution for her grades and construct a pie chart.

Accepted Answer

The answer of A student has completed 20 courses in...

Question 15

Exhibit 2-1
The number of hours worked per week) by 400 statistics students are shown below.
 $$\begin{array} { c c } 
\text { Number of Hours } & \text { Frequency } \
0 - 9 & 20 \
10 - 19 & 80 \
20 - 29 & 200 \
30 - 39 & 100
\end{array}$$
-Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 - 29

Accepted Answer

A)  is 300 
B)  is 0.25 
C)  is 0.75 
D)  is 0.5 
A)  is 300 
B)  is 0.25 
C)  is 0.75 
D)  is 0.5

Question 16

Exhibit 2-1
The number of hours worked per week) by 400 statistics students are shown below.
 $$\begin{array} { c c } 
\text { Number of Hours } & \text { Frequency } \
0 - 9 & 20 \
10 - 19 & 80 \
20 - 29 & 200 \
30 - 39 & 100
\end{array}$$
-Refer to Exhibit 2-1. If a cumulative frequency distribution is developed for the above data, the last class will have a cumulative frequency of

Accepted Answer

A)  100 
B)  1 
C)  30 - 39 
D)  400 
A)  100 
B)  1 
C)  30 - 39 
D)  400

Question 17

Below you are given the examination scores of 20 students.
 $$\begin{array} { l l l l } 
52 & 99 & 92 & 86 &84\
93 & 72 & 76 & 95 &88\
92 & 58 & 65 & 79&80 \
90 & 75 & 74 & 56&99
\end{array}$$ 
a. Construct a frequency distribution for this data. Let the first class be 50 - 59 and draw a histogram.
b. Construct a cumulative frequency distribution.
c. Construct a relative frequency distribution.
d. Construct a cumulative relative frequency distribution.

Accepted Answer

The answer of Below you are given the examination scores...

Question 18

Exhibit 2-1
The number of hours worked per week) by 400 statistics students are shown below.
 $$\begin{array} { c c } 
\text { Number of Hours } & \text { Frequency } \
0 - 9 & 20 \
10 - 19 & 80 \
20 - 29 & 200 \
30 - 39 & 100
\end{array}$$
-Refer to Exhibit 2-1. The midpoint of the last class is

Accepted Answer

A)  50 
B)  34 
C)  35 
D)  34.5 
A)  50 
B)  34 
C)  35 
D)  34.5

Question 19

Exhibit 2-1
The number of hours worked per week) by 400 statistics students are shown below.
 $$\begin{array} { c c } 
\text { Number of Hours } & \text { Frequency } \
0 - 9 & 20 \
10 - 19 & 80 \
20 - 29 & 200 \
30 - 39 & 100
\end{array}$$
-Refer to Exhibit 2-1. The percentage of students working 19 hours or less is

Accepted Answer

A)  20% 
B)  25% 
C)  75% 
D)  80% 
A)  20% 
B)  25% 
C)  75% 
D)  80%

Question 20

d. 60 ANSWER: c Exhibit 2-4
A sample of 15 children shows their favorite restaurant:
 $\begin{array}{|l|l|l|}
\hline \text { McDonalds } & \text { Luppi's } & \text { Mellow Mushroom } \
\hline \text { Friday's } & \text { McDonalds } & \text { McDonalds } \
\hline \text { Pizza Hut } & \text { Taco Bell } & \text { McDonalds } \
\hline \text { Mellow Mushroom } & \text { Luppi's } & \text { Pizza Hut } \
\hline \text { McDonalds } & \text { Friday's } & \text { McDonalds }\\hline
\end{array}$
-Refer to Exhibit 2-4. The frequency distribution for these data is

Accepted Answer

A)  McDonalds 4, Friday's 3, Pizza Hut 1, Mellow Mushroom 4, Luppi's 3, Taco Bell 1 
B)  McDonalds 6, Friday's 2, Pizza Hut 2, Mellow Mushroom 2, Luppi's 2, Taco Bell 1 
C)  McDonalds 6, Friday's 1, Pizza Hut 3, Mellow Mushroom 1, Luppi's 2, Taco Bell 2 
D)  McDonalds 2, Friday's 6, Pizza Hut 3, Mellow Mushroom 1, Luppi's 2, Taco Bell 2 
A)  McDonalds 4, Friday's 3, Pizza Hut 1, Mellow Mushroom 4, Luppi's 3, Taco Bell 1 
B)  McDonalds 6, Friday's 2, Pizza Hut 2, Mellow Mushroom 2, Luppi's 2, Taco Bell 1 
C)  McDonalds 6, Friday's 1, Pizza Hut 3, Mellow Mushroom 1, Luppi's 2, Taco Bell 2 
D)  McDonalds 2, Friday's 6, Pizza Hut 3, Mellow Mushroom 1, Luppi's 2, Taco Bell 2

A histogram is said to be skewed to the left if it has a

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The number of students working 19 hours or less

In constructing a frequency distribution, the approximate class width is computed as

The difference between the lower class limits of adjacent classes provides the

Data that provide labels or names for categories of like items are known as

A situation in which conclusions based upon aggregated crosstabulation are different from unaggregated crosstabulation is known as

A graphical presentation of the relationship between two variables is

A student has completed 20 courses in the School of Arts and Sciences. Her grades in the 20 courses are shown below. a. Develop a frequency distribution and a bar chart for her grades. b. Develop a relative frequency distribution for her grades and construct a pie chart.

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 - 29

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. If a cumulative frequency distribution is developed for the above data, the last class will have a cumulative frequency of

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The midpoint of the last class is

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The percentage of students working 19 hours or less is

Data and Statistics

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

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Comparisons Involving Means, Experimental Design, and Analysis of Variance

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Simple Linear Regression

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Exam 2: Descriptive Statistics: Tabular and Graphical Displays

A histogram is said to be skewed to the left if it has a

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The number of students working 19 hours or less

In constructing a frequency distribution, the approximate class width is computed as

The difference between the lower class limits of adjacent classes provides the

Data that provide labels or names for categories of like items are known as

A situation in which conclusions based upon aggregated crosstabulation are different from unaggregated crosstabulation is known as

A graphical presentation of the relationship between two variables is

A student has completed 20 courses in the School of Arts and Sciences. Her grades in the 20 courses are shown below. a. Develop a frequency distribution and a bar chart for her grades. b. Develop a relative frequency distribution for her grades and construct a pie chart.

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The cumulative relative frequency for the class of 20 - 29

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The midpoint of the last class is

Exhibit 2-1 The number of hours worked per week) by 400 statistics students are shown below. Number of Hours Frequency 0-9 20 10-19 80 20-29 200 30-39 100 -Refer to Exhibit 2-1. The percentage of students working 19 hours or less is

Data and Statistics

Descriptive Statistics: Numerical Measures

Introduction to Probability

Discrete Probability Distributions

Continuous Probability Distributions

Sampling and Sampling Distributions

Interval Estimation

Hypothesis Tests

Comparisons Involving Means, Experimental Design, and Analysis of Variance

Comparisons Involving Proportions and a Test of Independence

Simple Linear Regression

Multiple Regression

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