Statistics And Probability Question 81
Question: The harmonic mean of 3, 7, 8, 10, 14 is
Options:
A) $ \frac{3+7+8+10+14}{5} $
B) $ \frac{1}{3}+\frac{1}{7}+\frac{1}{8}+\frac{1}{10}+\frac{1}{14} $
C) $ \frac{\frac{1}{3}+\frac{1}{7}+\frac{1}{8}+\frac{1}{10}+\frac{1}{14}}{4} $
D) $ \frac{5}{\frac{1}{3}+\frac{1}{7}+\frac{1}{8}+\frac{1}{10}+\frac{1}{14}} $
Show Answer
Answer:
Correct Answer: D
Solution:
$ H\text{.M}.=\frac{n}{\frac{1}{x_1}+\frac{1}{x_2}+…..+\frac{1}{x_{n}}}=\frac{5}{\frac{1}{3}+\frac{1}{7}+\frac{1}{8}+\frac{1}{10}+\frac{1}{14}} $ .
BETA
