How is frequency distribution useful to us?

Answer 1

I suspect you are referring to a sample frequency distribution.

Providing that the sample size is sufficiently large there are various kinds of information that can be gleaned from one:

• the approximate range of values in the population
• the location of the population as measured by the value that appears most often in the frequency distribution-known as its mode
• the likely shape of the population's distribution, in particular whether it is symmetric or skewed
• obviously how values of the population variable are distributed
• whether there are any curious peaks or valleys, even when the sample size is large
• the amount of variation around the central value