The mean of the number 6, y, 7, x and 14 is 8. Express y in terms of x.
y = 13 - x
y = 9 - x
y = 6 - x
y = 14 - x
The mean of 6 variate is 8. Five of them are 8, 15, 0, 6, 11. Find the sixth variate.
5
3
8
9
Find the mean of natural numbers from 3 to 12.
7.2
7
7.5
7.9
Find the mean of following set of numbers.6, 9, 11, 12 and 7
9.5
9.2
9.6
The marks obtained by 19 students of a class are given below: 27, 36, 22, 31, 25, 26, 33, 24, 37 32, 29, 28, 36, 35, 27, 26, 32, 35, 38. Find Lower Quartile.
26
33
27
35
If 69.5 is the mean of 72, 70, x, 62, 50, 71, 90, 64, 58 and 82, find the value of x.
72
70
76
74
Find the lower quartile of the first twelve natural numbers.
3.5
4.5
2.5
5.5
If the mean of 6, 4, 7, a and 10 is 8. Find the value of 'a'.
10
13
12
The arithmetic mean of first n natural numbers is
n/2
n/2 + 1
n+1/2
n-1/2
