**4/20/15 We are experiencing some issues with the site calculator below. As a temporary fix, please use the above calculator!**

Input the number of trials (n or X) into the “X” box, then type the probability into the “P(x)” box. Click “Calculate Expected Value.”

for multiple probabilities, click the “More” button to enter more X/P(X)

P(X)

0

0

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If you prefer an **online interactive environment** to learn R and statistics, this *free R Tutorial by Datacamp* is a great way to get started. If you're are somewhat comfortable with R and are interested in going deeper into Statistics, try *this Statistics with R track*.

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