Down-To-Earth sells houses. The following table represents the selling price of a house (y) in thousands of rands and the number of houses sold at that price (x):
x 5 15 19 7
y 500 900 1500 2 000
The standard deviation for the number of houses sold is
[1] 6,6.
[2] 4,0.
[3] 11,5.
[4] 5,7.
[5] none of the above.
we have to find the standard deviation for the number of
houses sold
so the given data is 5,15,19,7
mean
standard deviation (s)
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