If the class marks in a grouped frequency distribution of weights of students are 75, 84, 93, 102, 111, 120 - Economics - Organisation of Data

Question

If the class marks in a grouped frequency distribution of
weights
of students are 75, 84, 93, 102, 111, 120 and 129
Find
A)Width of the class or size of the Class Interval
B)The class limits [Inclusive series]
Class boundaries [Exclusive series]

Vaishali Nebhwani · Accepted Answer

Dear student,

Class interval
70 5 - 79 5
79 5 - 88 5
88 5 - 97 5
97 5 - 106 5
106 5 - 115 5
115 5 - 124 5
124 5 - 133 5

Class mark
75
84
93
102
111
120
129

Width of class interval or class size = 9

Regards

Class interval	70.5 - 79.5	79.5 - 88.5	88.5 - 97.5	97.5 - 106.5	106.5 - 115.5	115.5 - 124.5	124.5 - 133.5
Class mark	75	84	93	102	111	120	129

If the class marks in a grouped frequency distribution of weights of students are 75, 84, 93, 102, 111, 120 and 129. Find A)Width of the class or size of the Class Interval. B)The class limits [Inclusive series] Class boundaries [Exclusive series]

If the class marks in a grouped frequency distribution of weights
of students are 75, 84, 93, 102, 111, 120 and 129.
Find
A)Width of the class or size of the Class Interval.
B)The class limits [Inclusive series]
Class boundaries [Exclusive series]