Consider a set S given as {11,22,33,44,55,66,77,88,99} . If each element of the data set is multiplied by -6 then by what factors will the Mean,Variance and Standard Deviation respectively change ?	Choose the correct answer
A) -6,-6,-6	B) -6,6,6	C) 1,1,1	D) -6,36,6	E) 6,6,36
Mean: If all values are multiplied by -6 then their sum will also be multiplied by -6 so Mean will also get -6   Variance:   Variance is equal to (Sum of (Square of (the difference between mean and individual values))/Total number of values   When we multiply all the values by -6 then the difference between the mean and the individual values also gets multiplied by -6 and the square of that difference becomes 36. So, the variance gets multiplied by a factor of 36   SD:   Standard Deviation is the square root of variance so sqrt(36)=6. So SD gets multiplied by a factor of 6.   So, answer will be -6,36,6.
<result>D</result>
Consider a set S given as {11,22,33,44,55,66,77,88,99} . If each element of the data set is multiplied by -6 then by what factors will the Mean,Variance and Standard Deviation respectively change ?