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
More Progression (Sequence and Series) Questions
In the four numbers first three are in G.P. and last three are in A.P. whose common difference is 6. If the first and la...Let R1 and R2 respectively be the maximum ranges up and down an inclined plane and R be the maximum range on the horizon...Sum of the series 1 + 3 + 7 + 15 + 31 + .... to n terms is-...The sum of an infinitely decreasing G.P. is equal to 4 and the sum of the cubes of its terms is equal to 64 / 7. Then 5t...Let f(x) be a polynomial function of second degree. If f(1) = f(-1) and a, b, c are in A. P., then f′(a), f′...