Hello I have to construct probability table using 3 coin toss and see how many head I can obtain. I used tree diagram and go the probability and obtain  X (number of heads) P(X) 0 1/8 1 3/8 2 3/8 3 1/8   Can you confirm that this is correct? X (number of heads) P(X) X*P(X) (X-m)2*P(X) 0 0.125 0 0.28125 1 0.375 0.375 0.09375 2 0.375 0.75 0.09375 3 0.125 0.375 0.28125 Totals 1 1.5 0.75

Question

Hello I have to construct probability table using 3 coin toss and see how many head I can obtain.

I used tree diagram and go the probability and obtain 

X (number of heads)

P(X)

0

1/8

1

3/8

2

3/8

3

1/8

 

Can you confirm that this is correct?

X (number of heads)

P(X)

X*P(X)

(X-m)2*P(X)

0

0.125

0

0.28125

1

0.375

0.375

0.09375

2

0.375

0.75

0.09375

3

0.125

0.375

0.28125

Totals

1

1.5

0.75

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