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Only need help with finding the mean and standard deviation.

Only need help with finding the mean and standard deviation.-example-1
User Xochitl
by
2.5k points

1 Answer

10 votes
10 votes

Given

Probability distribution table

Find

Mean and standard deviation

Step-by-step explanation

mean for probability distribution is given by


mean=\sum_^xP(x)

so , mean


\begin{gathered} 0+0.25+0.54+0.36+0.64 \\ 1.79 \end{gathered}

standaed deviation


\begin{gathered} \sum_^x^2P(x) \\ 0+0.25+1.08+1.08+2.56 \\ 4.97 \end{gathered}

Final Answer

mean = 1.79

standard deviation = 4.97

User Animeta
by
2.8k points