Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
Chapter 02
Describing Data: Frequency Tables, Frequency Distributions, and
Graphic Presentation
True / False Questions
1. A frequency distribution groups data into classes showing the number
of observations in each class.
True False
2. A frequency distribution for qualitative data has class limits.
True False
3. To summarize the gender of students attending a college, the number
of classes in a frequency distribution depends on the number of
students.
True False
4. In frequency distributions, classes are mutually exclusive if each
individual, object, or measurement is included in only one category.
True False
5. In a bar chart, the x-axis is labeled with the values of a qualitative
variable.
True False
, Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
6. In a bar chart, the heights of the bars represent the frequencies in each
class.
True False
7. The midpoint of a class, which is also called a class mark, is halfway
between the lower and upper limits.
True False
8. A class interval, or class width, can be determined by subtracting the
lower limit of a class from the lower limit of the next higher class.
True False
9. To convert a frequency distribution to a relative frequency distribution,
divide each class frequency by the sum of the class frequencies.
True False
10 To convert a frequency distribution to a relative frequency distribution,
. divide each class frequency by the number of classes.
True False
11 A pie chart is similar to a relative frequency distribution.
.
True False
12 A pie chart shows the relative frequency in each class.
.
True False
13 To construct a pie chart, relative class frequencies are used to graph
. the "slices" of the pie.
True False
14 A cumulative frequency distribution is used when we want to determine
. how many observations lie above or below certain values.
True False
, Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
15 A frequency polygon is a very useful graphic technique when
. comparing two or more distributions.
True False
Multiple Choice Questions
16 Monthly commissions of first-year insurance brokers are $1,270,
. $1,310, $1,680, $1,380, $1,410, $1,570, $1,180 and $1,420. These
figures are referred to as a(n) __________.
A. Histogra
m
B. Raw
data
C. Frequency
distribution
D. Frequency
polygon
17 A small sample of computer operators shows monthly incomes of
. $1,950, $1,775, $2,060, $1,840, $1,795, $1,890, $1,925, and $1,810.
What are these ungrouped numbers called?
A. Histogra
m
B. Class
limits
C. Class
frequencies
D. Raw
data
, Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
18 When data is collected using a quantitative, ratio variable, what is true
. about a frequency distribution that summarizes the data?
A. Upper and lower class limits must be
calculated.
B. A pie chart can be used to summarize
the data.
C. Number of classes is equal to the number of variable's
values.
D. The "5 to the k rule" can be
applied.
19 When data is collected using a qualitative, nominal variable, what is
. true about a frequency distribution that summarizes the data?
A. The upper and lower class limits must be
calculated.
B. A pie chart can be used to summarize
the data.
C. The number of classes is equal to the number of variable's
values plus 2.
D. The "5 to the k rule" can be
applied.
20 When data is collected using a qualitative, nominal variable (in other
. words, male or female), what is true about a frequency distribution that
summarizes the data?
A. The upper and lower class limits must be
calculated.
B. Class midpoints can be
computed.
C. The number of classes corresponds to the number of a
variable's values.
D. The "2 to the k rule" can be
applied.
Chapter 02
Describing Data: Frequency Tables, Frequency Distributions, and
Graphic Presentation
True / False Questions
1. A frequency distribution groups data into classes showing the number
of observations in each class.
True False
2. A frequency distribution for qualitative data has class limits.
True False
3. To summarize the gender of students attending a college, the number
of classes in a frequency distribution depends on the number of
students.
True False
4. In frequency distributions, classes are mutually exclusive if each
individual, object, or measurement is included in only one category.
True False
5. In a bar chart, the x-axis is labeled with the values of a qualitative
variable.
True False
, Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
6. In a bar chart, the heights of the bars represent the frequencies in each
class.
True False
7. The midpoint of a class, which is also called a class mark, is halfway
between the lower and upper limits.
True False
8. A class interval, or class width, can be determined by subtracting the
lower limit of a class from the lower limit of the next higher class.
True False
9. To convert a frequency distribution to a relative frequency distribution,
divide each class frequency by the sum of the class frequencies.
True False
10 To convert a frequency distribution to a relative frequency distribution,
. divide each class frequency by the number of classes.
True False
11 A pie chart is similar to a relative frequency distribution.
.
True False
12 A pie chart shows the relative frequency in each class.
.
True False
13 To construct a pie chart, relative class frequencies are used to graph
. the "slices" of the pie.
True False
14 A cumulative frequency distribution is used when we want to determine
. how many observations lie above or below certain values.
True False
, Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
15 A frequency polygon is a very useful graphic technique when
. comparing two or more distributions.
True False
Multiple Choice Questions
16 Monthly commissions of first-year insurance brokers are $1,270,
. $1,310, $1,680, $1,380, $1,410, $1,570, $1,180 and $1,420. These
figures are referred to as a(n) __________.
A. Histogra
m
B. Raw
data
C. Frequency
distribution
D. Frequency
polygon
17 A small sample of computer operators shows monthly incomes of
. $1,950, $1,775, $2,060, $1,840, $1,795, $1,890, $1,925, and $1,810.
What are these ungrouped numbers called?
A. Histogra
m
B. Class
limits
C. Class
frequencies
D. Raw
data
, Full file at http://testbankscafe.eu/Test-Bank-for-Basic-Statistics-for-Business-and-Economics-8th-Edition-Lin
18 When data is collected using a quantitative, ratio variable, what is true
. about a frequency distribution that summarizes the data?
A. Upper and lower class limits must be
calculated.
B. A pie chart can be used to summarize
the data.
C. Number of classes is equal to the number of variable's
values.
D. The "5 to the k rule" can be
applied.
19 When data is collected using a qualitative, nominal variable, what is
. true about a frequency distribution that summarizes the data?
A. The upper and lower class limits must be
calculated.
B. A pie chart can be used to summarize
the data.
C. The number of classes is equal to the number of variable's
values plus 2.
D. The "5 to the k rule" can be
applied.
20 When data is collected using a qualitative, nominal variable (in other
. words, male or female), what is true about a frequency distribution that
summarizes the data?
A. The upper and lower class limits must be
calculated.
B. Class midpoints can be
computed.
C. The number of classes corresponds to the number of a
variable's values.
D. The "2 to the k rule" can be
applied.
