Statistics And Probability Question 261
Question: For a frequency distribution, standard deviation is computed by
Options:
A) $ \sigma =\frac{\sum f(x-\bar{x})}{\sum f} $
B) $ \sigma =\frac{\sqrt{\sum f{{(x-\bar{x})}^{2}}}}{\sum f} $
C) $ \sigma =\sqrt{\frac{\sum f{{(x-\bar{x})}^{2}}}{\sum f}} $
D) $ \sigma =\sqrt{\frac{\sum f(x-\bar{x})}{\sum f}} $
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Answer:
Correct Answer: C
Solution:
It is obvious.
BETA
