WorksheetsFrequency Table or Histogram
Total questions: 20
Worksheet time: 20mins
What is the cumulative frequency of the 3rd class in this distribution?
1
14
15
24
Given the data below, what should be the class width to have 9 classes?
30
147
148
149
What percent of people drink 4-7 cups of coffee per week?
44.4%
11.1%
3%
16.7%
Emily is making a histogram for the data:
12, 94, 61, 24, 77, 36, 56, 83, 7, 34, 45, 75, 86, 42, 91, 78, and 96. She wants to make 10 classes. What should the class width be?
8
9
10
17
According to the portion of the frequency table given, how many people have an MBA?
9
60
20
not enough information
How many students scored between a 86 and a 90?
1
3
6
10
This tables shows what type of frequency distribution?
Categorical Frequency Table
Grouped Frequency Table
Ungrouped Frequency Table
Percent Frequency Table
These are used as the border between two consecutive bars in a histogram. They are the intermediate value between an upper class limit and the next lower class limit.
class limits
class boundaries
frequencies
class marks
This is the interval between two consecutive upper (or lower) class limits.
class width
class boundaries
midpoints
frequency
Why is this frequency distribution incorrect?
The fourth class width is different from the others
There is a zero.
Classes should overlapped.
Find the midpoints.
25.5, 35.5, 45.5, 55.5, 65.5, 75.5
20.5, 30.5, 40.5, 50.5, 60.5, 70.5, 80.5
21, 31, 41, 51, 61, 71
30, 40, 50, 60, 70, 80
Find the relative frequencies
37%, 76%, 92%, 95%, 98%, 100%
28%, 30%, 12%, 2%, 2%, 2%
33%, 37%, 20%, 7%, 7%, 7%
37%, 39%, 16%, 3%, 3%, 3%
Find the cumulative frequencies.
28, 56, 84, 100
28, 58, 70, 72, 74, 76
33%, 37%, 20%, 7%, 7%, 7%
28, 30, 12, 2, 2, 2
Look at the frequency distribution. Find the class boundaries.
21, 31, 41, 51, 61, 70, 80
25.5, 35.5, 45.5, 55.5, 65.5, 75.5
20.5, 30.5, 40.5, 50.5, 60.5, 70.5
30, 40, 50, 60, 70, 80
What would be the cumulative frequency for the third class?
5
12
17
18
A type of bar graph used to display numerical data that has been organized into equal intervals.
Line Plot
Interval
Frequency Table
Histogram
A table that shows classes or intervals of data entries with a count of the number of entries in each class.
Frequency distribution
Frequency polygon
Histogram
Ogive
If the first class in a frequency table is 5-10, what is the class width?
5
6
7
8
Which interval has the greatest number of employees?
11-21
33-43
77-87
44-54
Which interval has the greatest number of students?
