Find the standard deviation of the distribution.
X |
1 |
2 |
3 |
4 |
P(X) |
0.23 |
0.38 |
0.27 |
0.12 |
Solution :
=> The standard deviation of the given distribution is σ = 0.9495
Explanation :
Given that x as 1,2,3,4
P(x) as 0.23,0.38,0.27,0.12
=> All decimals were converted to fractions then
=> x as 1, 2, 3, 4
=> P(x) as 23/100 , 19/50 , 27/100 , 3/25
=> The standard deviation of the given distribution is σ = 0.9495
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