Identify the class width, class midpoints, and class boundaries for the given fr
ID: 3277225 • Letter: I
Question
Identify the class width, class midpoints, and class boundaries for the given frequency distribution.
(degrees°F)
Frequency
50 dash 5450-54
11
55 dash 5955-59
33
60 dash 6460-64
55
65 dash 6965-69
1111
(degrees°F)
Frequency
70 dash 7470-74
77
75 dash 7975-79
77
80 dash 8480-84
11
What is the class width?
nothing
(Type an integer or a decimal.)
Identify the class width, class midpoints, and class boundaries for the given frequency distribution.
Full data set Open in StatCrunch + Copy to Clipboard + Open in Excel + Daily Low Temperature(degrees°F)
Frequency
50 dash 5450-54
11
55 dash 5955-59
33
60 dash 6460-64
55
65 dash 6965-69
1111
Daily Low Temperature(degrees°F)
Frequency
70 dash 7470-74
77
75 dash 7975-79
77
80 dash 8480-84
11
Explanation / Answer
Class width is defined as the difference in the values of the range as defined in the table.
hence here the class width is 59-55 = 4 or
54-50 = 4 , you can pick any interval and substract the values to find the class width
class boundaries the extreme ends of the interval , such as 55 and 59 for our first case
and class midpoint is calculated as
(55+59)/2 = 57