Question 1 - Measures of Dispersion — effect of adding and multiplying constants on standard deviation Practice

Question 1

00:00Est. 1 min

Marks:+5.000.00

Passage

The mean and population standard deviation of marks (out of

50

) scored by the students of class X in an aptitude test are

30

and

5

respectively. If the marks of students are modified as follows: Modified marks

=\frac{2\times \text{Marks}+5}{5}

. Then, based on the given information, answer the subquestions.

Question

What is the population standard deviation of the modified marks of students?

Comprehension

Easy Difficulty

05 June 2022

Your answer