M2L4: Frequency Distribution

Question 1

With only a handful of scores, data are simply arranged from highest to lowest.

Answer 1

Ungrouped frequency distribution

Question 2

This is a table that shows the scores in groups

Answer 2

Grouped frequency distribution

Question 3

“a group of scores”

Answer 3

Class interval

Question 4

“the end numbers of the class interval”

Answer 4

Class limit

Question 5

the number of scores falling in each class interval

Answer 5

Class frequency

Question 6

the difference between the upper limit of the class and the preceding class

Answer 6

Class size
Class size = Upper limit - lower limit

Question 7

the midpoint of a class interval

Answer 7

Class mark
Class mark = (Upper limit + Lower limit) / 2

Question 8

true class limits

Answer 8

Class boundaries

Question 9

is defined as halfway between the lower-class limit of the class and the upper-class limit of the preceding class

Answer 9

Lower class boundary (LCB)

Question 10

is defined as halfway between the upper-class limit of the class and the lower class limit of the succeeding in class

Answer 10

Upper-class boundary (UCB)

Question 11

highest score - lowest score

Answer 11

Range

Question 12

illustrate the processes of organizing and describing data

Answer 12

Frequency distribution

Question 13

2 Methods of organizing data

Answer 13

1) Frequency distributions
2) Graphs

Question 14

a table in which all of the scores
are listed along with the frequency with which each occurs.

Answer 14

Frequency distribution

Question 15

The frequency distribution is a way of presenting data that makes the pattern of the data easier to see.

Answer 15

True

Question 16

You can make the data set even easier to read by grouping the scores and creating a class interval frequency distribution.

Answer 16

True

Question 17

individual scores are combined into
categories, or intervals, and then listed along with the frequency scores in each interval.

Answer 17

Class interval frequency

Question 18

A rule of thumb when creating class intervals is to have between 10 and 20 categories (Hinkle, Wiersma, & Jurs, 1988).

Answer 18

True

Question 19

A quick method of calculating what the width of the interval should be is to subtract the lowest score from the highest score and then divide the result by the number of intervals you want.

Answer 19

(Schweigert, 1994)

Question 20

Upper limit - lower limit

Answer 20

Class size

Question 21

(Upper limit + Lower limit) / 2

Answer 21

Class mark

Question 22

used to show the distribution of a categorical
variables.

Answer 22

Bar charts

Question 23

comparing levels of nominal variables

Answer 23

Vertical bar graphs

Question 24

commonly used to compare levels of ordinal variables

Answer 24

Horizontal bar graphs

Question 25

used to show what part of the whole each
level of category variable is

Answer 25

Pie charts

Question 26

used to visualize the value of variables over
time

Answer 26

Line graphs

Question 27

uses intervals of values and has no gap
between bars

Answer 27

Histogram

Question 28

it uses the actual values of the quantitative variables

Answer 28

Stem plot or stem and leaf plot