SOLUTION:
The scores of 5 students in an examination are: 6, 5, 8, 7 and 4. Find the variance.
Seven Matrons assembled for a meeting, shake hands with one another
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Probability-and-statistics
-> SOLUTION:
The scores of 5 students in an examination are: 6, 5, 8, 7 and 4. Find the variance.
Seven Matrons assembled for a meeting, shake hands with one another
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Hi
S m (x-µ) (x-µ)^2
4 6.00 -2.00 4.000
5 6.00 -1.00 1.000
6 6.00 0.00 0.000
7 6.00 1.00 1.000
8 6.00 2.00 4.000
30 10.000
10/4 = 2.5 the variance
Seven Matrons assembled for a meeting, shake hands with one another.
How many handshakes take place: n(n-1)/n = 7*6/2 = 21 handshakes
