Standard deviation - Jamb Mathematics Past Questions and Answers

Question 11:

• JAMB 2010

Find the standard deviation of 2, 3, 5 and 6

A. √6
B. √10
C. √\(\frac{2}{5}\)
D. √\(\frac{5}{2}\)

Question 12:

• JAMB 2011

\(\begin{array}{c|c}
Class Interval & 3 - 5 & 6 - 8 & 9 - 11 \\ \hline Frequency & 2 & 2 & 2 \end{array}\). Find the standard deviation of the above distribution.

A. √5
B. √6
C. √7
D. √2

Question 13:

• JAMB 2012

Find the standard deviation of 2,3,8,10 and 12

A. 3.9
B. 4.9
C. 5.9
D. 6.9

Question 14:

• JAMB 2014

Find the standard deviation of 5, 4, 3, 2, 1

A. \(\sqrt{2}\)
B. \(\sqrt{3}\)
C. \(\sqrt{6}\)
D. \(\sqrt{10}\)

Question 15:

• JAMB 2020

Calculate the standard deviation of the following data: 7, 8, 9, 10, 11, 12, 13

A. 2
B. 4
C. 12
D. 17