Question

What are we calculating when we calculate expected frequencies? What is the reason for calculating expected frequencies the way we do? In laymen’s term, what do expected frequencies tell us?

the previous answer to the same question really did not answer all the questions. like the laymen’s term for expected frequency. and the reason for calculating it.

Answer 1

Expected Frequency is defined as the number of times that we predict an event will occur based on a calculation using theoretical probabilities.

In laymen's term, the expected frequency can be explained by the following example:

Consider the tossing of a coin. A coin has two sides: Head and Tail. That means that the probability of the coin landing on any one side is 1/2, since it can land on one side out of 2 possible sides. If we flip a coin 1000 times, we expect to get Heads in 500out of the 1000 flips. To calculate the expected frequency, we multiply the total number of tosses(here 1000 tosses) by the probability getting Head (here: 1/2) and thus we get 1000 X 1/2 = 500 Heads.