Question 1

When data are collected in original form, they are called .

Accepted Answer

The answer of When data are collected in original form,...

Question 2

The following time-series plot presents the population growth (in percent) of a suburb of Atlanta, Georgia for each of the years 1990 through 2009. Estimate the amount by which the rate of growth changed from 1993 to 1995 .

Accepted Answer

A)  about 2.9 percentage points 
B)  about 2.1 percentage points 
C)  about 1.4 percentage points 
D)  about 3.0 percentage points 
A)  about 2.9 percentage points 
B)  about 2.1 percentage points 
C)  about 1.4 percentage points 
D)  about 3.0 percentage points

Question 3

$\text { Construct a stem-and-leaf plot for the following data, in which the leaf represents the tent }$

$\begin{array}{rrrrrrrrrrrr}
\hline 7.0 & 7.4 & 10.4 & 10.9 & 9.7 & 9.3 & 7.3 & 8.7 & 7.1 & 5.4 & 6.6 & 9.3 \
9.8 & 8.9 & 9.3 & 7.7 & 8.4 & 8.7 & 8.8 & 7.3 & 2.4 & 2.5 & 9.6 & 8.8 \
\hline
\end{array}$

Accepted Answer

A) 
$\begin{array}{r|l}
\hline 2 & 45 \
3 & \
4 & \
5 & 4 \
6 & 36 \
7 & 0147 \
8 & 3477889 \
9 & 333678 \
10 & 49
\end{array}$ 
B) 
$\begin{array}{r|l}
\hline 1 & 5 \
2 & \
3 & 4 \
4 & \
5 & 4 \
6 & 6 \
7 & 013347 \
8 & 477889 \
9 & 333678 \
10 & 49
\end{array}$ 
C) 
$\begin{array}{r|l}
\hline 2 & 45 \
3 & \
4 & \
5 & 4 \
6 & 6 \
7 & 01334 \
8 & 34777889 \
9 & 33678 \
10 & 49
\end{array}$ 
D) 
$\begin{array}{r|l}
\hline 2 & 45 \
3 & \
4 & \
5 & 4 \
6 & 6 \
7 & 013347 \
8 & 477889 \
9 & 333678 \
10 & 49
\end{array}$

ace. 
A) 
$\begin{array}{r|l}
\hline 2 & 45 \
3 & \
4 & \
5 & 4 \
6 & 36 \
7 & 0147 \
8 & 3477889 \
9 & 333678 \
10 & 49
\end{array}$ 
B) 
$\begin{array}{r|l}
\hline 1 & 5 \
2 & \
3 & 4 \
4 & \
5 & 4 \
6 & 6 \
7 & 013347 \
8 & 477889 \
9 & 333678 \
10 & 49
\end{array}$ 
C) 
$\begin{array}{r|l}
\hline 2 & 45 \
3 & \
4 & \
5 & 4 \
6 & 6 \
7 & 01334 \
8 & 34777889 \
9 & 33678 \
10 & 49
\end{array}$ 
D) 
$\begin{array}{r|l}
\hline 2 & 45 \
3 & \
4 & \
5 & 4 \
6 & 6 \
7 & 013347 \
8 & 477889 \
9 & 333678 \
10 & 49
\end{array}$

ace.

Question 4

The frequency polygon and the histogram are two different ways to represent the same
data set.

Accepted Answer

A) True 
 B)False

Question 5

A sample of 200 high school students were asked how many hours per week they spend u television. The following frequency distribution presents the results.
$\begin{array}{cc}
\hline{\text { Time Spent Watehing Television }} \
\hline \text { Number of hours } & \text { Frequency } \
\hline 0.0-3.9 & 46 \
4.0-7.9 & 43 \
8.0-11.9 & 37 \
12.0-15.9 & 20 \
16.0-19.9 & 28 \
20.0-23.9 & 15 \
24.0-27.9 & 11 \
\hline
\end{array}$
Construct a frequency polygon for the frequency distribution.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 6

$$\text { Classify the histogram as skewed to the left, skewed to the right, or approximately symmc }$$
 
 ic.

Accepted Answer

A)  skewed to the left 
B)  skewed to the right 
C)  approximately symmetric 
A)  skewed to the left 
B)  skewed to the right 
C)  approximately symmetric

Question 7

The following pie chart presents the percentages of fish caught in each of four ratings cate
Match this pie chart with its corresponding bar graph.
 
 gories.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 8

The following information shows the colors of cars preferred by customers. Draw a pie graph and inc how many degrees that black represents in a pie graph?
$\begin{array}{ll}
\frac{\text { Color }}{\text { Red }} & \text { Number } \
\text { Black } & 50 \
\text { White } & 60 \
\text { Green } & 30 \
\text { Blue } & 20 \
& 40
\end{array}$
 ate

Accepted Answer

The answer of The following information shows the colors of...

Question 9

A Pareto chart is useful for showing percentages of the total at different times.

Accepted Answer

A) True 
 B)False

Question 10

Following is a pie chart that presents the percentages spent by a certain household on its $\mathrm { f }$ largest annual expenditures. What percentage of the money spent was spent on food, hous utilities?

Accepted Answer

A)  65.4% 
B)  47% 
C)  60.4% 
D)  52.5% 
A)  65.4% 
B)  47% 
C)  60.4% 
D)  52.5%

Question 11

The following table presents the purchase totals (in dollars) of a random sample of gasolis purchases at a convenience store.

Construct a frequency histogram using a class width of 10 , and using 0 as the lower class the first class.
$\begin{array}{rrrrr}
\hline 95 & 99 & 4 & 75 & 23 \
26 & 27 & 65 & 68 & 69 \
31 & 7 & 72 & 67 & 46 \
0 & 46 & 1 & 53 & 67 \
\hline
\end{array}$

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 12

What is the upper class boundary of the class 23-35 ?

Accepted Answer

A)  7 
B)  7.5 
C)  35.5 
D)  35 
A)  7 
B)  7.5 
C)  35.5 
D)  35

Question 13

The following frequency distribution presents the weights in pounds (lb) of a sample of visitors to a health clinic.
$\begin{array}{cc}
\hline \text { Weight (lb) } & \text { Frequency } \
\hline 90-99 & 1 \
100-109 & 4 \
110-119 & 4 \
120-129 & 3 \
130-139 & 7 \
140-149 & 6 \
150-159 & 4 \
160-169 & 2 \
\hline
\end{array}$ What is the class width?

Accepted Answer

A)  11 
B)  80 
C)  10 
D)  9 
A)  11 
B)  80 
C)  10 
D)  9

Question 14

A recent statistics exam yielded the following 10 scores. Construct a frequency polygon distribution using the class limits shown below.
$$80,99,77,67,93,71,76,86,79,71$$
$\begin{array}{c|l|l|l}
\text { Class Limits } & \text { Midpoints } & \text { Tally } & \text { Frequency } \
\hline 61-70 & & & \
71-80 & & & \
81-90 & & & \
91-100 & & &
\end{array}$

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 15

A sample of 200 high school students were asked how many hours per week they spend u television. The following frequency distribution presents the results.
$\begin{array}{cc}
\hline{\text { Time Spent Watching Television }} \
\hline \text { Number of hours } & \text { Frequency } \
\hline 0.0-3.9 & 81 \
4.0-7.9 & 51 \
8.0-11.9 & 34 \
12.0-15.9 & 17 \
16.0-19.9 & 13 \
20.0-23.9 & 2 \
24.0-27.9 & 2 \
\hline
\end{array}$

Construct a relative frequency polygon for the frequency distribution.

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 16

An automobile dealer wants to construct a pie graph to represent types of cars sold in July. He sold 72 cars, 16 of which were convertibles. How many degrees should be
Used for the convertibles section ?

Accepted Answer

A)  $80 ^ { \circ }$ 
B)  $100 ^ { \circ }$ 
C)  $60 ^ { \circ }$ 
D)  $50 ^ { \circ }$ 
A)  $80 ^ { \circ }$ 
B)  $100 ^ { \circ }$ 
C)  $60 ^ { \circ }$ 
D)  $50 ^ { \circ }$

Question 17

The following frequency distribution presents the frequency of passenger vehicles that pa: through a certain intersection from 8:00 AM to 9:00 AM on a particular day.
$\begin{array}{cc}
\hline \text { Vehicle Type } & \text { Frequency } \
\hline \text { Motorcycle } & 14 \
\text { Sedan } & 46 \
\text { SUV } & 24 \
\text { Truck } & 30
\end{array}$

Construct a relative frequency Parato chart for the data. s

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 18

$$\text { A pie graph is $\underline { not }$  useful in showing which of the following characteristics of a data set? }$$

Accepted Answer

A)  categories that make up the largest proportions of the total 
B)  frequency changes over time 
C)  relative frequencies for each category in the distribution 
D)  categories that make up the smallest proportions of the total 
A)  categories that make up the largest proportions of the total 
B)  frequency changes over time 
C)  relative frequencies for each category in the distribution 
D)  categories that make up the smallest proportions of the total

Question 19

Which type of graph represents the data by using vertical bars of various heights to indicate frequencies?

Accepted Answer

A)  cumulative frequency 
B)  ogive 
C)  histogram 
D)  frequency polygon 
A)  cumulative frequency 
B)  ogive 
C)  histogram 
D)  frequency polygon

Question 20

Find the class boundaries, midpoint, and width of the class 28-34?

Accepted Answer

boundaries

When data are collected in original form, they are called .

The following time-series plot presents the population growth (in percent) of a suburb of Atlanta, Georgia for each of the years 1990 through 2009. Estimate the amount by which the rate of growth changed from 1993 to 1995 .

$\text { Construct a stem-and-leaf plot for the following data, in which the leaf represents the tent }$ 7.0 7.4 10.4 10.9 9.7 9.3 7.3 8.7 7.1 5.4 6.6 9.3 9.8 8.9 9.3 7.7 8.4 8.7 8.8 7.3 2.4 2.5 9.6 8.8

The frequency polygon and the histogram are two different ways to represent the same data set.

$\text { Classify the histogram as skewed to the left, skewed to the right, or approximately symmc }$ $\text { Classify the histogram as skewed to the left, skewed to the right, or approximately symmc } ic.$ ic.

The following pie chart presents the percentages of fish caught in each of four ratings cate Match this pie chart with its corresponding bar graph. gories.

The following information shows the colors of cars preferred by customers. Draw a pie graph and inc how many degrees that black represents in a pie graph? Number Black 50 White 60 Green 30 Blue 20 40 ate

A Pareto chart is useful for showing percentages of the total at different times.

The following table presents the purchase totals (in dollars) of a random sample of gasolis purchases at a convenience store. Construct a frequency histogram using a class width of 10 , and using 0 as the lower class the first class. 95 99 4 75 23 26 27 65 68 69 31 7 72 67 46 0 46 1 53 67

What is the upper class boundary of the class 23-35 ?

The following frequency distribution presents the weights in pounds (lb) of a sample of visitors to a health clinic. Weight (lb) Frequency 90-99 1 100-109 4 110-119 4 120-129 3 130-139 7 140-149 6 150-159 4 160-169 2 What is the class width?

A recent statistics exam yielded the following 10 scores. Construct a frequency polygon distribution using the class limits shown below. $80,99,77,67,93,71,76,86,79,71$ Class Limits Midpoints Tally Frequency 61-70 71-80 81-90 91-100

An automobile dealer wants to construct a pie graph to represent types of cars sold in July. He sold 72 cars, 16 of which were convertibles. How many degrees should be Used for the convertibles section ?

The following frequency distribution presents the frequency of passenger vehicles that pa: through a certain intersection from 8:00 AM to 9:00 AM on a particular day. Vehicle Type Frequency Motorcycle 14 Sedan 46 SUV 24 Truck 30 Construct a relative frequency Parato chart for the data. s

$\text { A pie graph is \underline { not } useful in showing which of the following characteristics of a data set? }$

Which type of graph represents the data by using vertical bars of various heights to indicate frequencies?

Find the class boundaries, midpoint, and width of the class 28-34?

The Nature of Probability and Statistics

Data Description

Probability and Counting Rules

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

Exam 2: Frequency Distributions and Graphs

When data are collected in original form, they are called .

The following time-series plot presents the population growth (in percent) of a suburb of Atlanta, Georgia for each of the years 1990 through 2009. Estimate the amount by which the rate of growth changed from 1993 to 1995 .

The frequency polygon and the histogram are two different ways to represent the same data set.

Classify the histogram as skewed to the left, skewed to the right, or approximately symmc \text { Classify the histogram as skewed to the left, skewed to the right, or approximately symmc } Classify the histogram as skewed to the left, skewed to the right, or approximately symmc ic.

The following pie chart presents the percentages of fish caught in each of four ratings cate Match this pie chart with its corresponding bar graph. gories.

The following information shows the colors of cars preferred by customers. Draw a pie graph and inc how many degrees that black represents in a pie graph? Number Black 50 White 60 Green 30 Blue 20 40 ate

A Pareto chart is useful for showing percentages of the total at different times.

Following is a pie chart that presents the percentages spent by a certain household on its f\mathrm { f }f largest annual expenditures. What percentage of the money spent was spent on food, hous utilities?

The following table presents the purchase totals (in dollars) of a random sample of gasolis purchases at a convenience store. Construct a frequency histogram using a class width of 10 , and using 0 as the lower class the first class. 95 99 4 75 23 26 27 65 68 69 31 7 72 67 46 0 46 1 53 67

What is the upper class boundary of the class 23-35 ?

The following frequency distribution presents the weights in pounds (lb) of a sample of visitors to a health clinic. Weight (lb) Frequency 90-99 1 100-109 4 110-119 4 120-129 3 130-139 7 140-149 6 150-159 4 160-169 2 What is the class width?

A recent statistics exam yielded the following 10 scores. Construct a frequency polygon distribution using the class limits shown below. 80,99,77,67,93,71,76,86,79,7180,99,77,67,93,71,76,86,79,7180,99,77,67,93,71,76,86,79,71 Class Limits Midpoints Tally Frequency 61-70 71-80 81-90 91-100

An automobile dealer wants to construct a pie graph to represent types of cars sold in July. He sold 72 cars, 16 of which were convertibles. How many degrees should be Used for the convertibles section ?

The following frequency distribution presents the frequency of passenger vehicles that pa: through a certain intersection from 8:00 AM to 9:00 AM on a particular day. Vehicle Type Frequency Motorcycle 14 Sedan 46 SUV 24 Truck 30 Construct a relative frequency Parato chart for the data. s

Which type of graph represents the data by using vertical bars of various heights to indicate frequencies?

Find the class boundaries, midpoint, and width of the class 28-34?

The Nature of Probability and Statistics

Data Description

Probability and Counting Rules

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Variances, and Two Proportions

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

$\text { Classify the histogram as skewed to the left, skewed to the right, or approximately symmc }$ $\text { Classify the histogram as skewed to the left, skewed to the right, or approximately symmc } ic.$ ic.

A recent statistics exam yielded the following 10 scores. Construct a frequency polygon distribution using the class limits shown below. $80,99,77,67,93,71,76,86,79,71$ Class Limits Midpoints Tally Frequency 61-70 71-80 81-90 91-100