Deck 2: Frequency Distributions and Graphs

Question 1

Greg wants to construct a frequency distribution for the political affiliation of the employees at Owen's Hardware Store. What type of distribution would be best?

A) cumulative
B) ungrouped
C) categorical
D) grouped

Answer 1

C

Question 2

For grouped frequency distributions, the is obtained by adding the
lower and upper limits and dividing by 2.

Answer 2

class midpoint

Question 3

A) class limits overlap
B) a class has been omitted
C) there is no percent column
D) class width is not uniform

Answer 3

A

Question 4

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

Question 5

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

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

Question 6

Which of the following does not need to be done when constructing a frequency distribution?

A) select the number of classes desired
B) find the range
C) use classes that are mutually exclusive
D) make the class width an even number

Question 7

The lower class limit represents the smallest data value that can be included in the class.

Question 8

A) a class has been omitted
B) class width is not uniform
C) there is no percent column
D) class limits overlap

Question 9

What are the boundaries of the class 11-18?

A) 11 and 18
B) 10.5 and 18.5
C) 7.5 and 21.5
D) 7

Question 10

For the class 5-19, the upper class limit is

A) 4.5
B) 5
C) 19.5
D) 19

Question 11

A) class limits overlap
B) there is no percent column
C) class width is not uniform
D) a class has been omitted

Question 12

What is the lower class limit of the class 13-17?

A) 15
B) 17
C) 12.5
D) 13

Question 13

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

Question 14

If the limits for a class were 20-38, the boundaries would be 19.5-38.5.

Question 15

What is the midpoint of the class 17-20?

A) 1.5
B) 18
C) 18.5
D) 3

Question 16

Find the class boundaries, midpoint, and width of the class 15.2-18.1?

Question 17

The of a specific class is the number of data values contained in it.

Question 18

What is the midpoint of the class 6-10?

A) 4
B) 8
C) 5
D) 8.5

Question 19

In an ungrouped frequency distribution of the average age of high school graduates, what would be the boundaries for the class of graduates who were reported to be 18 years old?

A) 17.5-18.5 years old
B) 17.6-19.5 years old
C) 17.6-18.5 years old
D) 17-19 years old

Question 20

What is the class width?

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

Question 21

How many students memorized the number in three trials or less?

A) 3
B) 14
C) 87
D) 13

Question 22

Question 23

Question 24

Question 25

An ogive is also called a cumulative frequency graph.

Question 26

What are the boundaries of the class 1.87-3.43?

A) 1.879-3.439
B) 1.865-3.435
C) 1.82-3.48
D) 1.87-3.43

Question 27

nternet.

Question 28

The cumulative frequency for a class is the sum of the frequencies of the classes less
than and equal to the upper boundary of the specific class.

Question 29

Question 30

The three most commonly used graphs in research are the histogram, the
, and the cumulative frequency graph (ogive).

Question 31

s What is the relative frequency of the Motorcyle category?

A) 0.138
B) 11%
C) 0.058
D) 11

Question 32

For the class 16.3-23.8, the width is 8.5.

Question 33

Question 34

When the range is large, and classes that are several units in width are needed, a
frequency distribution is used.

Question 35

A) 55-65
B) 85-95
C) 65-75
D) 75-85

Question 36

Question 37

Thirty students recorded the colors of their eyes, choosing from the colors brown, blue, green, hazel, and black. This data can be appropriately summarized in a(n)
)

A) open-ended distribution
B) upper boundary
C) categorical frequency distribution
D) grouped frequency distribution

Question 38

What is the lower class limit in the class 8-12?

A) 7.5
B) 8.5
C) 10
D) 8

Question 39

Which of the following pairs of class limits would be appropriate for grouping the numbers 11, 14, 9, and 16?

A) 9-12 and 13-16
B) 9-11 and 14-16
C) 9-11 and 12-16
D) 8-12 and 12-16

Question 40

A) 65-75
B) 75-85
C) 55-65
D) 85-95

Question 41

Question 42

ic.

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

Question 43

A) 72
B) 76
C) 6
D) 22

Question 44

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

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

Question 45

Question 46

Construct a frequency histogram.

Question 47

A) 13
B) 12
C) 25
D) 44

Question 48

The frequency polygon is a graph that displays the data by using lines that connect points
plotted for the frequencies at the midpoints of the classes.

Question 49

r equal

A) 20
B) 30
C) 66
D) 60

Question 50

Question 51

A) unimodal
B) bimodal

Question 52

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

Question 53

The following table presents the purchase totals (in dollars) of a random sample of gasoline purchases at a convenience store.
Construct a relative frequency histogram using a class width of 10, and using 0 as the lower class
Limit for the first class.

Question 54

A histogram is a graph that represents the cumulative frequencies for the classes in a
frequency distribution.

Question 55

For a given data set, the ogive and the frequency polygon will have the same overall
shape.

Question 56

Question 57

Graphs that show distributions using proportions instead of raw data as frequencies are called

A) ogive graphs.
B) relative frequency graphs.
C) frequency polygons.
D) histograms.

Question 58

Question 59

Question 60

If the graph of a frequency distribution has a peak and the data tapers off more
slowly to the right and more quickly to the left, the distribution is said to be
.

Question 61

watching

Question 62

Question 63

s

Question 64

Karen is constructing a pie graph to represent the number of hours her classmates do homework each day. She found that 8 of 24 classmates did homework for three hours
Each day. In her pie graph, this would represent how many degrees?

Question 65

the

Question 66

gories.

Question 67

hing

Question 68

the

Question 69

Question 70

Question 71

various

A) Cereals and baked goods
B) Fruits and vegetables
C) Dairy products
D) Meat poultry, fish, eggs

Question 72

s

Question 73

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

Question 74

Question 75

Question 76

s

Question 77

ate

Question 78

6h6)ing

Question 79

hing

Question 80

gories.