Posted by **Heather** on Monday, March 14, 2011 at 3:21pm.

I am to find the mean, variance, and standard deviation for the probability distribution. I don't even know where to start. Here is the problem

x P(x)

0 0.19

1 0.32

2 0.28

3 0.21

- Math (Statistics) -
**Anonymous**, Monday, March 14, 2011 at 4:16pm
In google type:

wikipedia mean variance standard deviation

When you see list of results click on pages in list.

Then in google type:

mathisfun Standard Deviation Calculator

When you see list of results click on:

mathsisfuncom/data/standard-deviation-calculator.html

When page be open type your numbers and click ENTER button on your keyboard. You will see result.

- Math (Statistics) -
**Heather**, Monday, March 14, 2011 at 4:51pm
This is not right. I know how to find the mean, variance, and standard deviation normally. This problem is for probability distribution, which is an entirely different formula.

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