Question 1

The single number that best represents a given interval of a frequency distribution is called the _______.

Accepted Answer

The answer of The single number that best represents a...

Question 2

A sample of 18 tries to connect to an online service using a phone line.
  
-If a cumulative "less than" distribution were constructed from the above frequency distribution, the cumulative frequency in the third row down would be

Accepted Answer

A)  1 . 
B)  9 . 
C)  6 . 
D)  7 . 
A)  1 . 
B)  9 . 
C)  6 . 
D)  7 .

Question 3

Table 1
A sample of 80 company employees is grouped into a table based on their weekly salaries:
  
-From the data in Table 1, construct the cumulative "less than" distribution.

Accepted Answer

The answer of Table 1
A sample of 80 company employees...

Question 4

For the data below, construct a frequency histogram and a frequency polygon.

Accepted Answer

The answer of For the data below, construct a frequency...

Question 5

Frequency distributions are of two types: quantitative and qualitative.

Accepted Answer

A) True 
 B)False

Question 6

In a software engineering class, the professor asked 48 students to name their favorite programming language. Their replies were Java, Perl, Perl, C++, Java, Lisp, Perl, Java, C++, Perl, Perl, Java, Smalltalk, Perl, Java, C++, Perl, Lisp, Perl, Perl, Java, Java, C++, Perl, Smalltalk, C++, Perl, Java, Lisp, Java, Perl, Perl, Perl, Smalltalk, C++, Java, Lisp, Perl, Java, Lisp, Java, Perl, Smalltalk, Java, Lisp, C++, Java, and Perl. Draw a bar chart with vertical bars for these categorical data.

Accepted Answer

The answer of In a software engineering class, the professor...

Question 7

To group data on the number of potential buyers entering an automobile dealer's showroom for a given week, the sales manager uses the classes $25-49,51-75,75-99,100-124$, and 125-149. Explain what difficulties might arise.

Accepted Answer

There is no place fo

Question 8

The heights (in inches) of 30 adult males are listed below. Construct a frequency histogram using five classes.
$\begin{array}{llllllllll}70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71\end{array}$
$\begin{array}{llllllllll}67 & 71 & 70 & 74 & 69 & 68 & 71 & 71 & 71 & 72\end{array}$
$\begin{array}{llllllllll}69 & 71 & 68 & 67 & 73 & 74 & 70 & 71 & 69 & 68\end{array}$

Accepted Answer

The answer of The heights (in inches) of 30 adult...

Question 9

Which of the following would be a desirable property of a frequency distribution?

Accepted Answer

A)  contains open end classes 
B)  contains more than 15 classes 
C)  contains exactly 4 classes 
D)  contains equal class intervals 
A)  contains open end classes 
B)  contains more than 15 classes 
C)  contains exactly 4 classes 
D)  contains equal class intervals

Question 10

List the data which correspond to the following stem-and-leaf display.
$3 \lvert \begin{array}{lllllll}6 & 2 & 5 & 7 & 2\end{array}$

Accepted Answer

The answer of List the data which correspond to the...

Question 11

The heights (in inches) of 30 adult males are listed below. Construct a frequency polygon using five classes.
$\begin{array}{llllllllll}70 & 72 & 71 & 70 & 69 & 73 & 69 & 68 & 70 & 71\end{array}$
$\begin{array}{llllllllll}67 & 71 & 70 & 74 & 69 & 68 & 71 & 71 & 71 & 72\end{array}$
$\begin{array}{llllllllll}69 & 71 & 68 & 67 & 73 & 74 & 70 & 71 & 69 & 68\end{array}$

Accepted Answer

The answer of The heights (in inches) of 30 adult...

Question 12

Pie charts are graphical representations of _______ distributions.

Accepted Answer

The answer of Pie charts are graphical representations of _______...

Question 13

A frequency polygon is a line graph of a cumulative frequency distribution.

Accepted Answer

A) True 
 B)False

Question 14

For the data below, construct an ogive.

Accepted Answer

The answer of For the data below, construct an ogive.
...

Question 15

An ogive of a cumulative "less than" distribution always decreases as we move from left to right.

Accepted Answer

A) True 
 B)False

Question 16

We can show the proportion of values falling into various class intervals by using a _______ distribution.

Accepted Answer

A)  frequency 
B)  cumulative 
C)  quantitative 
D)  percentage 
A)  frequency 
B)  cumulative 
C)  quantitative 
D)  percentage

Question 17

Given the frequency distribution:   For the histogram of this distribution, the height of the 30-59 interval should be _______

Accepted Answer

A)  18 
B)  9 
C)  54 
D)  6 
A)  18 
B)  9 
C)  54 
D)  6

Question 18

One of the advantages of frequency distributions is that we can find the exact highest value in the data.

Accepted Answer

A) True 
 B)False

Question 19

Following are the numbers of minutes it took 27 students to memorize two lists of German adjectives, one in the morning and one in the late afternoon.
   Produce a two-way frequency table for these data using the classes 10-14, 15-19, 20-24, and 25-29 for the morning, and the classes 15-19, 20-24, and 25-29 for the afternoon.

Accepted Answer

The answer of Following are the numbers of minutes it...

Question 20

In a graph of frequency distribution with classes 10-19, 20-29, 30-59, and 60-69, explain why a histogram of the data might be misleading if all the heights of the rectangles are equal to the class frequencies.

Accepted Answer

It gives a misleading impression if we t

The single number that best represents a given interval of a frequency distribution is called the _______.

A sample of 18 tries to connect to an online service using a phone line. -If a cumulative "less than" distribution were constructed from the above frequency distribution, the cumulative frequency in the third row down would be

Table 1 A sample of 80 company employees is grouped into a table based on their weekly salaries: -From the data in Table 1, construct the cumulative "less than" distribution.

For the data below, construct a frequency histogram and a frequency polygon.

Frequency distributions are of two types: quantitative and qualitative.

To group data on the number of potential buyers entering an automobile dealer's showroom for a given week, the sales manager uses the classes $25-49,51-75,75-99,100-124$ , and 125-149. Explain what difficulties might arise.

The heights (in inches) of 30 adult males are listed below. Construct a frequency histogram using five classes. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 71 71 71 72 69 71 68 67 73 74 70 71 69 68

Which of the following would be a desirable property of a frequency distribution?

List the data which correspond to the following stem-and-leaf display. 3open vertical bar 6 2 5 7 2

The heights (in inches) of 30 adult males are listed below. Construct a frequency polygon using five classes. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 71 71 71 72 69 71 68 67 73 74 70 71 69 68

Pie charts are graphical representations of _______ distributions.

A frequency polygon is a line graph of a cumulative frequency distribution.

For the data below, construct an ogive.

An ogive of a cumulative "less than" distribution always decreases as we move from left to right.

We can show the proportion of values falling into various class intervals by using a _______ distribution.

Given the frequency distribution: For the histogram of this distribution, the height of the 30-59 interval should be _______

One of the advantages of frequency distributions is that we can find the exact highest value in the data.

In a graph of frequency distribution with classes 10-19, 20-29, 30-59, and 60-69, explain why a histogram of the data might be misleading if all the heights of the rectangles are equal to the class frequencies.

Introduction

Summarizing Data: Measures of Location

Summarizing Data: Measures of Variation

Possibilities and Probabilities

Some Rules of Probability

Expectations and Decisions

Probability Distributions

The Normal Distribution

Sampling and Sampling Distributions

Problems of Estimation

Tests of Hypotheses: Means

Tests of Hypotheses: Standard Deviations

Tests of Hypotheses Based on Count Data

Analysis of Variance

Regression

Correlation

Nonparametric Tests

Filters

Exam 2: Summarizing Data: Listing and Grouping

The single number that best represents a given interval of a frequency distribution is called the _______.

A sample of 18 tries to connect to an online service using a phone line. -If a cumulative "less than" distribution were constructed from the above frequency distribution, the cumulative frequency in the third row down would be

Table 1 A sample of 80 company employees is grouped into a table based on their weekly salaries: -From the data in Table 1, construct the cumulative "less than" distribution.

For the data below, construct a frequency histogram and a frequency polygon.

Frequency distributions are of two types: quantitative and qualitative.

To group data on the number of potential buyers entering an automobile dealer's showroom for a given week, the sales manager uses the classes 25−49,51−75,75−99,100−12425-49,51-75,75-99,100-12425−49,51−75,75−99,100−124 , and 125-149. Explain what difficulties might arise.

The heights (in inches) of 30 adult males are listed below. Construct a frequency histogram using five classes. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 71 71 71 72 69 71 68 67 73 74 70 71 69 68

Which of the following would be a desirable property of a frequency distribution?

List the data which correspond to the following stem-and-leaf display. 3open vertical bar 6 2 5 7 2

The heights (in inches) of 30 adult males are listed below. Construct a frequency polygon using five classes. 70 72 71 70 69 73 69 68 70 71 67 71 70 74 69 68 71 71 71 72 69 71 68 67 73 74 70 71 69 68

Pie charts are graphical representations of _______ distributions.

A frequency polygon is a line graph of a cumulative frequency distribution.

For the data below, construct an ogive.

An ogive of a cumulative "less than" distribution always decreases as we move from left to right.

We can show the proportion of values falling into various class intervals by using a _______ distribution.

Given the frequency distribution: For the histogram of this distribution, the height of the 30-59 interval should be _______

One of the advantages of frequency distributions is that we can find the exact highest value in the data.

In a graph of frequency distribution with classes 10-19, 20-29, 30-59, and 60-69, explain why a histogram of the data might be misleading if all the heights of the rectangles are equal to the class frequencies.

Introduction

Summarizing Data: Measures of Location

Summarizing Data: Measures of Variation

Possibilities and Probabilities

Some Rules of Probability

Expectations and Decisions

Probability Distributions

The Normal Distribution

Sampling and Sampling Distributions

Problems of Estimation

Tests of Hypotheses: Means

Tests of Hypotheses: Standard Deviations

Tests of Hypotheses Based on Count Data

Analysis of Variance

Regression

Correlation

Nonparametric Tests

Filters

To group data on the number of potential buyers entering an automobile dealer's showroom for a given week, the sales manager uses the classes $25-49,51-75,75-99,100-124$ , and 125-149. Explain what difficulties might arise.