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.

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.