Question

Calculate mean and standard deviation for probability distribution

Answer 1

How to use this calculator

Example 1:

A company tested a new product and found that the number of errors per 100 products had the following probability distribution:

number of errors(X)P(X) 2  0.02  3  0.25  4  0.4  5  0.3  6 0.03

Find the Variance of the number of errors per 100 products.

Set up the form

Example 2:

The discrete probability distribution of X is given by:

XP(x) 0  0.1  2  0.2  5  1/3  7/3  1/6  5 0.3