Processing math: 100%
Home / Aptitude Tests / Mathematics / \(\begin{array}{c|c}...
\(\begin{array}{c|c} class& 1 - 3 & 4 - 6 & 7 - ...

class134679Frequency585
Find the standard deviation of the data using the table above

A.

5

B.

6

C.

53

D.

5

Correct answer is D

class intervalsFre(F)class-marks(x)Fx(xx)(xx)2F(xx)213521039454685400007958403945189090

x = fxf

= 9018

= 5

S.D = f(xx)2f

= 9018

= 5