Compute the mean and variance of the following probability d

Compute the mean and variance of the following probability distribution. (Round your answers to 2 decimal places.)

Solution

mean = sum of all observation/ total number of observation

= (6+10+14+18)/4 = 48/4 = 12

varience = The average of the squared differences from the Mean.

=

= 20( according to the formula) here n are 4 and xi are 6,10,14,18 and mean from above is 12

put these values u will get the reuired answer