If variance of variables a ,2a ,2a ,3a ,...

If variance of variables `a ,2a ,2a ,3a ,3a ,3a ,dot,10 a` is 54 then value of `' a '` can be 3 (b) `-3` (c) 9 (d) 6

Text Solution

AI Generated Solution

Topper's Solved these Questions

INVERSE TRIGONOMETRIC FUNCTIONS
RESONANCE DPP|Exercise All Questions|15 Videos
MATRICES
RESONANCE DPP|Exercise All Questions|7 Videos

Similar Questions

Explore conceptually related problems

The value of (3+sqrt(2))(3-sqrt(2)) is: (a) 0 (b) 6 (c) 9 (d) 7

The value of (3+sqrt(3))(3-sqrt(3)) is: (a) 0 (b) 6 (c) 9 (d) 3

A ratio equivalent to 2:3 is 4:3 (b) 2:6(c)6:9 (d) 10:9

The fraction equivalent to 1 2/3 is (a) (10)/3 (b) 3/5 (c) (10)/6 (d) 6/(10)

If the mean and the variance of the numbers a, b, 8, 5 and 10 are 6 and 6.8 respectively, then the value of a^(3)+b^(3) is equal to

If a variable tangent to the curve x^2y=c^3 makes intercepts a , bonx-a n dy-a x e s , respectively, then the value of a^2b is 27c^3 (b) 4/(27)c^3 (c) (27)/4c^3 (d) 4/9c^3

Find the value of ( 2.bar 6 - 0.bar 9 ) is ( a ) 4/3 ( b ) 1 /3 ( c ) 5/3

RESONANCE DPP-JEE MAINS-All Questions

Two non-negative integers are chosen at random, then the probability ...
Text Solution
|
Let an be the n^(t h) term of an A.P. If sum(r=1)^(100)a(2r)=alpha&su...
Text Solution
|
If variance of variables a ,2a ,2a ,3a ,3a ,3a ,dot,10 a is 54 then va...
Text Solution
|
If mean of squares of deviations of a set of n observations about -2a ...
Text Solution
|
The angles of a triangle are in A.P. If the greatest angle is double ...
Text Solution
|
The area of the quadrilateral formed by the tangents at the endpoint o...
Text Solution
|
A class consists of a number of boys whose ages are in A.P., the commo...
Text Solution
|
If 7 times the 7th term of an A.P. is equal to 11 times its elevent...
Text Solution
|
A bag contains 50 tickets numbered 1,2,3..., 50 of which five are draw...
Text Solution
|
The minimum area of triangle formed by the tangent to the ellipse (x^2...
Text Solution
|
int(x^2-1)/(xsqrt(1+x^4)) dx
Text Solution
|
If the solution of the differential equation (dy)/(dx)=1/(xcosy+sin2y)...
Text Solution
|
Two tangents to the parabola y^(2) = 8x meet the tangent at its vertex...
Text Solution
|
The line y=m x bisects the area enclosed by the curve y=1+4x-x^2 and t...
Text Solution
|
Consider 8 vertices of a regular octagon and its centre. If T denotes ...
Text Solution
|
IfI(m , n)=int0^1x^(m-1)(1-x)^(n-1)dx ,(m , n in I ,m ,ngeq0),t h e n...
Text Solution
|
There are 720 permutations of the digits 1, 2, 3, ,4 5, 6. Suppose the...
Text Solution
|
5 Indian & 5 American couples meet at a party& shake hands. If no wife...
Text Solution
|
Find the number of terms of a G.P. in which the ratio of the sum of th...
Text Solution
|
The number of terms of an A.P. is even; the sum of the odd terms is ...
Text Solution
|