Question 143

If the arithmetic mean of some observations is 26.5 and their median is 25.4. then their mode is:

Solution

.

Arithmetic mean=26.5

Median=25.4

Using empirical formula,

mode=3$$\times\ $$median$$\ -\ $$2$$\times\ $$mean

=3$$\times\ $$25.4$$\ -\ $$2$$\times\ $$26.5

=76.2$$\ -\ $$53

=23.2

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