If x and y represent the mean and the median respectively of the following set...

JAMB 1988

If x and y represent the mean and the median respectively of the following set of numbers 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, find the \(\frac{x}{y}\) correct to one decimal place

A. 18
B. 15
C. 1.0
D. 5

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Correct Answer: Option C

Explanation

Mean \(\bar{x}\) = \(\frac{156}{10}\) = 15.6

Median = \(\bar{y}\) = \(\frac{15 + 16}{2}\)

\(\frac{31}{2}\) = 15.5

\(\frac{x}{y}\) = \(\frac{15.6}{15.5}\) = 1.0065

1.0(1 d.p)

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