Four questions that don't require explanation, I just ran out of time and brain thing.

(a) Calculate?p

where p takes the values 15, 10, 5, 7

(b) Calculate?(b²+ b)

whereb takes the values 5, 3, 5, 7

(c) Calculate?(w - 5)²,

wherew takes the values 9, 2, 8, 4

(d) In statistics the correlation between two sets of numbers is given by the formula below. Use this formula to calculate the correlation between the following heights and weights of AFL players.

PLAYER HEIGHT(cm) WEIGHT(Kg)

1 198 98

2 188 92

3 205 102

4 201 108

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