In a data the number i is repeated i times for `i=1,2,....n` then the mean of the data is

In a data the number i is repeated i xx for i=1,2,...,n. Then the mean of the data is

The median, mode , and mean of a data is 9, if there are five integers in the data and the range of the data is 4. If the least value of the data is 7, then find the number of different observations in the data.

If each of n numbers x_(i)=i , is replaced by (i+1)x_(i) , then the new mean is

If the mean of the set of numbers x_(1),x_(2),...x_(n) is bar(x), then the mean of the numbers x_(i)+2i,1<=i<=n is

Statement-1 :if each of n numbers x_i=i is replaced by (i+1) x_i , then the new mean becomes ((n+1)(5n+4))/6 Statement-2 : A.M. = (Sigma_(i=1)^(n) x_i)/n .

If the mean of the set of numbers x_(1),x_(2),x_(3),...,x_(n) is bar(x), then the mean of the numbers x_(i)+2i,1<=i<=n is

A number equal to 2 times the mean and with a frequency equal to k is inserted in a data having n observation. If the new mean is (4)/(3) times the old mean, then the value of (k)/(n) is