Math miscellaneousHard
Question
Let x1, x2,....,xn be n observations such that Σ x21 = 400 and Σ x1 = 80 Then a possible value of n among the following is
Options
A.15
B.18
C.9
D.12
More Math miscellaneous Questions
Suppose f(x) is differentiable x = 1 and f(1 + h) = 5, then f′(1) equals...Let f(x) = for n ≥ 2 and g(x) = (x). Then ∫xn-2g(x)dx equals...The number of real solutions of the equation x2 - 3 |x| + 2 = 0 is...Let Tr = , (a < 0), then the value of is -...Let the sum of the first three terms of an A.P. be 39 and the sum of its last four terms be 178. If the first term of th...