Find the arithmetic mean of:

Find the arithmetic means of first 6 natural numbers.

Find the arithmetic means of first 6 natural numbers.

Find the arithmetic mean from the following distribution. :

Find the arithmetic mean by (a) assumed mean and (b) step deviation mthods.

Find the arithmetic mean and median for first n natural numbers.

The coefficient of variation for a distribution is 60 and standard deviation is 21. Find the arithmetic mean.

If the mode and median of a frequency distribution are 31 and 37 respectively, find the arithmetic mean.