CAPE Applied Mathematics Unit 1 · 2014 · Paper 1 · Question Q37
The time, x minutes, taken on 9 different occasions for an air conditioning unit to reach its desired temperature, y\ ^\circ\text{C}, when switched on is summarized by
\sum x = 68.8, \sum x^2 = 753.9, \sum y = 180
\sum y^2 = 5100, \sum xy = 1960
The sample product-moment correlation coefficient to 3 significant figures, is
- (A)0.999
- (B)0.756
- (C)0.500
- (D)0.153
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