A grouped frequency distribution table with
classes of equal sizes using 105-120 (120 not
included) as one of the class intervals is
constructed for the following data: The number
of classes in the distribution will be
125 126 140
98
128
78
108
67
87
149
102
136 145
112
84
103
123
130
120
89
103
65
65
96
Answers
Answer:
Step-by-step explanation:
Firstly class distribution and class intervals are the same...hope you understood that
no. of class intervals
Let us count them!
60 - 75 = 1 interval
75 - 90 = 2nd interval
90 - 105 = 3rd interval
105 - 120 = 4th interval
120 - 135 = 5th interval
135 - 150 = 6th interval.
Answer:
The number of classes is 6
Step-by-step explanation:
Given data 125, 126, 140, 98, 128, 78, 108, 67, 87, 149, 102, 136, 145, 112, 84, 103, 123, 130, 120, 89, `103, 65, 65, 96
one of the class interval is given by 105 -120 ( 120 not included )
size of the class = 120 -105 = 15
we need to construct class intervals with size 15
rewrite the given data in ascending order
65, 65, 67, 78, 84, 87, 89, 96, 98, 102, 103, 103, 108, 112, 120, 123, 125, 126, 128, 130, 136, 140, 145, 149
the least value is 65, highest value is 149
the classes will start from 60, with equal sizes 15,
60 - 75, 75 - 90, 90 - 105, 105 - 120 , 120 - 135, 135 - 150
the number of classes is 6