Question

find the arithmetic mean of the following 2/3,3/2,7/2,6/7.​

Answer 1

Answer:

Arithmetic mean = 13/8

Step-by-step explanation:

arithmetic mean = sum of observations / number of observation

$sum \: of \: observations = \frac{2}{3} + \frac{3}{2} + \frac{7}{2} + \frac{6}{7} \\ = \frac{(2 \times 14) + (3 \times 21) + (7 \times 21) + (6 \times 6)}{42} \\ = \frac{28 + 63 + 147 + 36}{42} \\ = \frac{274}{42} \\ = \frac{13}{2} \: \: \: approx \\ \\ mean = \frac{13}{2} \div 4 \\ = \frac{13}{2} \times \frac{1}{4} \\ = \frac{13}{8}$

hope you get your answer