Question

mean deviation and variance of the followong data:-
20,22,12,16,6,8,10,14,18,24​

Answer 1

Answer:

x=106+8+10+12+14+16+18+20+22+24=10150=15

Variance=10∑(x−x)2

=10(6−15)2+(8−15)2+(10−15)2+(12−15)2+(14−15)2+(16−15)2+(18−15)2+(20−15)2+(22−15)2+(24−15)2

=10(−9)2+(−7)2+(−5)2+(−3)2+(−1)2+(1)2+(3)2+(5)2+(7)2+(9)2

=10

Answer 2

Answer:

hope the above pic will be helpful to u