Trying to find variance. his equation is Prob(x)*[x-e(x)]^2. Just need an example to get me started. Original question is: A call center recieves an average of 10 calls per hour. Assuming the number...

Trying to find variance. his equation is Prob(x)*[x-e(x)]^2. Just need an example to get me started.
Original question is:

A call center recieves an average of 10 calls per hour. Assuming the number of calls received follows the poisson distribution, determine the probability of each of the discrete outcomes below. Then calculate the variance component for each one using the standard formula for the variance of a discrete random variable. At the end, take the sum of both columns.

Table:

Poisson Distribution Table
Calls	Density	Variance
0	0.00%
1	0.05%
2	0.23%
3	0.76%
4	1.89%
5	3.78%
6	6.31%
7	9.01%
8	11.26%
9	12.51%
10	12.51%
11	11.37%
12	9.48%
13	7.29%
14	5.21%
15	3.47%
16	2.17%
17	1.28%
18	0.71%
19	0.37%
20	0.19%
21	0.09%
22	0.04%
23	0.02%
24	0.01%
25	0.00%
26	0.00%
27	0.00%
28	0.00%
29	0.00%
30	0.00%
Sum	100.00%

Jun 01, 2022

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Trying to find variance. his equation is Prob(x)*[x-e(x)]^2. Just need an example to get me started. Original question is: A call center recieves an average of 10 calls per hour. Assuming the number...

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