The ratio of the sum of observations and the total number of observations is called:

The mean of x+2, x+3, x+4 and x-2 is:

In an ungrouped data there are 10 scores. After arranging them which term is the median?

The median of the data: 4, 6, 8, 9, 11 is

In class 10–15, 10 is called as

A paper is folded several times. When it was opened it was observed that it contained 22 triangles and 22 quadrilaterals and 12 pentagons. From the above mode is

Means of first 10 whole numbers and first 10 natural numbers is in the ratio of

$\bar{X}=A+\frac{\sum f_i{d}_i}{\sum f_i}\backslash overline\; X\; =\; A\; +\; \backslash frac\{\backslash sum\; f\_i\; d\_i\}\{\backslash sum\; f\_i\}$ is the formula to find mean for an ungrouped data. In this formula letter A represents for

Mean of first five even natural numbers is

Median of 10, 15, 7, x, 27, 30 is 16, then x =