The standard deviation of a data is 3 . ...

The standard deviation of a data is 3 . If each value is multiplled by 5 then the new variance is

A

3

B

15

C

5

D

225

Text Solution

Verified by Experts

Topper's Solved these Questions

SAMPLE PAPER -3
FULL MARKS|Exercise PART - II|14 Videos
SAMPLE PAPER -3
FULL MARKS|Exercise PART - III|16 Videos
SAMPLE PAPER -20 (UNSOLVED)
FULL MARKS|Exercise PART-IV|2 Videos
SAMPLE PAPER -4
FULL MARKS|Exercise Part- IV|1 Videos

Similar Questions

Explore conceptually related problems

The standard deviation of a data is 5. If each value is multiplied by 2, then the new variance is

The standard deviation of a collection data is 5sqrt(5) .If each value is multiplied by 3 then the new variance of the new data is ………….

If the standard deviation of a data is 3.6 and each value of the data is divided by 3, then find the new variance and new standard deviation.

Standard deviation of a collection of data is 2sqrt(2) . If each value is multiplied by 3 , then the standard deviation of the new data is ............

The variance of 20 observations is 5 . If eech observation is multiplied by 2 then the new variance of the resulting observations, is:

If the standard deviation of a data is 4.5 and if each value of the data is decreased by 5, then find the new standard deviation.

The standard deviation of 25 numbers is 40. If each of the numbers in increased by 5, then the new standerd deviation will be -

The variance of 20 observations is 5. If each observation is multiplied by 2, find the new variance of the resulting observations.

The standard deviation of 20 observations is sqrt(5) . If each observation is multiplied by 2 , find the standard deviation and variance of the resulting observations.

FULL MARKS-SAMPLE PAPER -3-PART - III

The standard deviation of a data is 3 . If each value is multiplled by...
Text Solution
|
Find x if g(f(f(x)))=f(g(g(x))), "given"f(x)=3x+1andg(x)=x+3.
Text Solution
|
Let A={-1, 1} and B={0, 2}. If the functions f:A to B defined by f(x)=...
Text Solution
|
Priya earned ₹15,000 in the first month. Therefore her salary inceased...
Text Solution
|
Find the sum to n terms of the series 0.4+0.44+0.444+…to n terms.
Text Solution
|
If the roots of the equation (c^(2)-ab)x^(3)-2(a^(2)-bc)x+b^(2)-ac=0 a...
Text Solution
|
ABCD is a quadrilateral in which AB= AD, the bisector of angle BAC an...
Text Solution
|
Find the equation of a straight line Passing through (1, -4) and has...
Text Solution
|
If (cos theta)/(1+sintheta)=(1)/(a) then prove that (a^(2)-1)/(a^(2)+1...
Text Solution
|
A toy is the shape of a cylinder surmounted by a hemisphere. The heigh...
Text Solution
|
A coin is tossed thrice. Find the probability of getting exactly two h...
Text Solution
|
A tent is in the shape of a cylinder surmounted by a conical top. If t...
Text Solution
|
Seven year ago, Varun's age was five times the square of swati's age. ...
Text Solution
|
Construct a Delta PQR in which QR= 5 cm, P=40^(@) and the median PG fr...
Text Solution
|
Draw the two tangents from a point which is 5 cm away from the centre ...
Text Solution
|
Draw the graph of y=(x-1)(x+3) and hence solve x^(2)-x-6=0.
Text Solution
|
Draw the graph of y=x^(2)+x and hence solve x^(2)+1=0.
Text Solution
|