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Question

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X Y
2 5
3 4
4 6
5 3
10 1

Using the above data set, please compute the following values. (Be sure to keep yourself organized by creating
extra columns to the right of the table as needed.)
(1) N =
(2) ?X = ______________
(3) ?Y = ______________
(4) ?X
2
= ______________
(5) (?X)2
= ______________
(6) ?XY = ______________
(7) ?X ?Y = ______________
(8) ?X-2 = ______________
(9) ?(X-2) = ______________

Solution

(1) N = 5
(2) ?X = 2+3+4+5+10=24
(3) ?Y = 5+4+6+3+1 = 19
(4) ?X^{2 =} 2²+3²+4²+5²+10² = 154
(5) (?X)2 =(2+3+4+5+10)² = 576
(6) ?XY = ______________
(7) ?X ?Y = 24*19= 456
(8) ?X-2 = 22
(9) ?(X-2) = __