ACTIVITY 1. Find the mean, variance and standard deviation of the following distribution. points each). Same solution/process with the example above.
1.
P(x)
0.08
2.
X
0
P(x)
1
2
0.3
0.1
0.1
0.34
0.16
3
0.42
X
2
4
6
8
0.2
0.1
10
12
0.2
1.
P(x)
0.08
2.
X
0
P(x)
1
2
0.3
0.1
0.1
0.34
0.16
3
0.42
X
2
4
6
8
0.2
0.1
10
12
0.2
Add an Answer
More Questions From This User See All
Answers & Comments
Answer:
to get x • P(x)
multiply the whole X column to P(x)
for example 1 × 3/10 the answer would be 3/10
to get x²•P(x)
suquared th whole X column then multiply it to P(x) column
for example the x is 2, the squared of 2 is 4, then 4 multiply to the P(x) 1/10