Example 9.8 Let us take an example to calculate mean and standard deviation of a binomial distribu- tion. Assume the following binomial distribution: X 0 1 20 3 4 5 f 4 20 40 40 20 4 Table 9.6 Worksheet f X d from 2.5 d'(d/0.5) fd²² 0 -2.5 -5 100 1 -1.5 180 2 -0.5 40 3 0.5 4 1.5 5 2.5 Total 4 20 40 40 20 4 128 xf 0 20 80 120 80 20 320 514515 -3 -1 d²² 25 9 1 1 9 25 Total 40 180 100 640
Example 9.8 Let us take an example to calculate mean and standard deviation of a binomial distribu- tion. Assume the following binomial distribution: X 0 1 20 3 4 5 f 4 20 40 40 20 4 Table 9.6 Worksheet f X d from 2.5 d'(d/0.5) fd²² 0 -2.5 -5 100 1 -1.5 180 2 -0.5 40 3 0.5 4 1.5 5 2.5 Total 4 20 40 40 20 4 128 xf 0 20 80 120 80 20 320 514515 -3 -1 d²² 25 9 1 1 9 25 Total 40 180 100 640
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
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Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:Example 9.8 Let us take an example to calculate mean and standard deviation of a binomial distribu-
tion. Assume the following binomial distribution:
0
X
1
2
3
4
5
f
4
20
40
40
20
4
Table 9.6
Worksheet
X
f
d from 2.5
d'(d/0.5)
fd¹²
0
-2.5
-5
100
1
-1.5
180
-0.5
40
0.5
40
1.5
180
2.5
100
640
234 50
5
Total
4
20
40
40
20
4
128
xf
0
20
80
120
80
20
320
ܬ ܗ ܝ ܝ
-3
3
5
d²²
25
9
1
1
9
25
Total
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