Question

the mean and standard deviation of 20 items are 10 and 2 respectively. calculate the sum of the squares of the items.
for my all friends ​

Answer 1

Answer:

104

Step-by-step explanation:

in given 20 items

given mean=10

standard deviation=2

variance=(standard deviation)^2

variance=sum of squares of 20 items -(mean)^2

2^2=sum of squares of 20 items-10^2

sum of squares of 20 items=10^2+2^2=100+4=104

Answer 2

Answer:

hlo.... kaha gayi tum muje bhul gayi kya....