SOLUTION: Find the mean and standard deviation of the following probability distribution: x 1 2 3 P(x) 0.3 0.4 0.3 Please show all of your work.

Algebra ->  Probability-and-statistics -> SOLUTION: Find the mean and standard deviation of the following probability distribution: x 1 2 3 P(x) 0.3 0.4 0.3 Please show all of your work.       Log On


   

Question 484962: Find the mean and standard deviation of the following probability distribution:
x
1
2
3

P(x)
0.3
0.4
0.3


Please show all of your work.
Answer by Tatiana_Stebko(1539) About Me  (Show Source):
You can put this solution on YOUR website!
Mean=1%2A0.3%2B2%2A0.4%2B3%2A0.3=2
standard deviation =