f the quartile deviation of a normal curve is 4.05, then its mean deviation is(a) 5.26(b) 6.24(c) 4.24(d) 4.80
Question
f the quartile deviation of a normal curve is 4.05, then its mean deviation is(a) 5.26(b) 6.24(c) 4.24(d) 4.80
Solution
The quartile deviation (QD) and mean deviation (MD) of a normal distribution are related by the formula:
MD = 4/3 * QD
Given that the quartile deviation (QD) is 4.05, we can substitute this into the formula to find the mean deviation (MD):
MD = 4/3 * 4.05 = 5.4
However, this option is not available in the choices provided. There might be a mistake in the question or the provided options.
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