Question 15

The table below shows the corresponding values of two variables X and Y.

X 33 31 28 25 23 22 19 17 16 14
Y 4 6 4 10 12 10 14 15 18 22

(a) Plot a scatter diagram to represent the data.

(b) Calculate \(\bar{x}\), the mean of X and \(\bar{y}\), the mean of Y.

(c) Draw the line of best fit to pass through \((\bar{x}, \bar{y})\).

(d) From your graph in (c), determine the (i) relationship between X and Y ; (ii) value of Y when X is 24.

Theory

Question details

Exam body
WAEC
Subject
Further Mathematics
Year
2009
Question no.
#15
Type
Theory

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