Progression (Sequence and Series)Hard
Question
If di is the deviation of a class mark yi from ′a′, the ′assumed mean′ and fi is the frequency, then
Mg = x +
(∑fidi), then x is-
Mg = x +
(∑fidi), then x is-Options
A.lower limit
B.assumed mean
C.number of observations
D.class size
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