Question

The variance and mean of distribution are 16 and 7 respectively. If every value is decreased by 3, then ______ 

विकल्प

• variance and mean each will be decrease by 3.

• mean will be decreased by 3 but the variance will remain the same.

• the variance will be decreased by 3 whereas the mean will be the same.

• both will remain the same.

Answer 1

The variance and mean of distribution are 16 and 7 respectively. If every value is decreased by 3, then the mean will be decreased by 3 but the variance will remain the same.