1 Choose the correct answer from the given four options in the formula x = a + ∑fixi∑fi - Maths - Statistics

Question

1 Choose the correct answer from the given four options in the
formula x ¯   =   a   +   ∑ f i x i
∑ f i
For finding the mean of grouped data di's are deviations from a
of
(a) lowers limits of the classes (b) Upper limits of the
classes
(c) Mid points of the classes (d) Frequencies of the class
marks
2 If mean off the distribution is 7 5
X 3 5 7 9 11 13 F 6 8 15 P 8 4
Then P :-
(a) 2 (b) 4 (c) 3 (d) 6

Neha Sethi · Accepted Answer

Kindly refer the similar link for your query
2

https://www meritnation
com/ask-answer/question/if-the-mean-of-the-following-data-is-15-then-find-the-value/statistics/3461594
For remaining queries we request you to post
them in separate threads to have rapid assistance from our
experts

Regards