Home / Unit-11 Basic Statistics / Question
MCQ
The class mark (midpoint) of the class interval 35-45 is:
Unit-11 Basic Statistics
A 35
B 40
C 45
D 80
Explanation

Class mark = (lower limit + upper limit)/2 = (35 + 45)/2 = 40.

Related MCQs

For the frequency distribution x: 5, 10, 15, 20 with f: 2, 4, 6, 8, the mean is:
Unit-11 Basic Statistics View
For the frequency distribution x: 2, 4, 6 with f: 3, 5, 2, the sum of fx is:
Unit-11 Basic Statistics View
If each value of a data set is multiplied by 3, the standard deviation:
Unit-11 Basic Statistics View
If no value in a data set is repeated, the data set has:
Unit-11 Basic Statistics View
In a pie chart, a sector with frequency 25 out of a total of 100 has a central angle of:
Unit-11 Basic Statistics View
The standard deviation of the data 2, 4, 6, 8 is approximately:
Unit-11 Basic Statistics View