यदि 10 माप के एक नमूने के लिए, sum_(i=1)^(10)(x_(i)-5)^(2)=350 और sum_(i=1)^(10)(x_(i)-6)=20 है,...

If sum_(i=1)^(n)(x_(i)-2)=110, sum_(i=1)^(n)(x_(i)-5)=20 , then what is the mean?

If sum_(i=1)^(n)sin x_(i)=n then sum_(i=1)^(n)cot x_(i)=

If sum_(i=1)^(n)sin x_(i)=n then sum_(i=1)^(n)cot x_(i)=

If for a sample size of 10 , sum_(i=1)^(10)(x_i-5)^2=350 and sum_(i=1)^(10)(x_i-6)=20 , then the variance is

If sum_(i=1)^(2n)cos^(-1)x_(i)=0 , then sum_(i=1)^(2n)x_(i) is :

Find sum_(i=1)^(6)2.3^(i)

For a sample size of 10 observations x_(1), x_(2),...... x_(10) , if Sigma_(i=1)^(10)(x_(i)-5)^(2)=350 and Sigma_(i=1)^(10)(x_(i)-2)=60 , then the variance of x_(i) is

sum_(i=1)^(n) sum_(i=1)^(n) i is equal to