1.Step 1: Convert all the percentages to decimal probabilities. For example:
95% = .95
2% = .02
2% = .02
1% = .01
Step 2: Construct a probability distribution table.
Step 3: Multiply the values in each column. (In other words, multiply each value of X by each probability P(X).)
Referring to our probability distribution table:
0 × .95 = 0
1 × .02 = .02
2 × .02 = .04
3 × .01 = .03
Step 4: Add the results from step 3 together.
0 + .02 + .04 + .03 = .09 is the mean.
2. It is easy to calculate the Mean: Add up all the numbers, then divide by how many numbers there are.
SANA PO MAKATULONG
