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# Binomial distribution graph watch

1. How do you plot x~B(4,0.3) on a graph, I have the answer scheme (june 2003) and it plots a bar chart from 0-4, but I am not sure where they got the Y values from.
Is there some binomial formula I have forgotten
Tanx, W
2. (Original post by wonderboy)
How do you plot x~B(4,0.3) on a graph, I have the answer scheme (june 2003) and it plots a bar chart from 0-4, but I am not sure where they got the Y values from.
Is there some binomial formula I have forgotten
Tanx, W
You can use P(X=a) = 4Ca * (0.3)^a * (0.7)^(4-a)

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Updated: June 23, 2004
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