Home / Unit-11 Basic Statistics / Question
MCQ
The frequencies of four classes are 2, 5, 8, 10. The total number of observations is:
Unit-11 Basic Statistics
A 15
B 20
C 25
D 30
Explanation

Total frequency = 2 + 5 + 8 + 10 = 25.

Related MCQs

Variance is defined as the:
Unit-11 Basic Statistics View
If each value of a data set is increased by 3, the standard deviation:
Unit-11 Basic Statistics View
In a pie chart, a sector with frequency 50 out of a total of 200 has a central angle of:
Unit-11 Basic Statistics View
For the classes 10-19, 20-29, 30-39, the lower class boundary of the class 20-29 is:
Unit-11 Basic Statistics View
The range of the data 15, 22, 8, 30, 45, 12 is:
Unit-11 Basic Statistics View
The midpoint of a class interval is called its:
Unit-11 Basic Statistics View