Statistics And Probability Question 208
Question: $ d_{i} $ is the deviation of a class mark $ y_{i} $ from ?a? the assumed mean and $ f_{i} $ is the frequency, if $ M_{g}=x+\frac{1}{\sum f_{i}}(\sum f_{i}d_{i}) $ , then x is
Options:
A) Lower limit
B) Assumed mean
C) Number of observations
D) Class size
Show Answer
Answer:
Correct Answer: B
Solution:
$ M_{g}=a+\frac{1}{\Sigma f_{i}}(\Sigma f_{i}d_{i}) $ ; \ $ x=a $ i.e., x = assumed mean.
BETA
