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

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Montgomery

Physics

5 August, 19:56

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

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Celia Ramos · Answer 1

1. What we calculate when we calculate expected frequency is the predicted frequency that can be obtained from an experiment whose outcome is expected to be true.

2. The reason for using expected frequency is because it is a tool used for doing complex probability calculations and predictions. Also, it serves as a working tool that can be used in place of the observed frequency, when the observed frequency is not available.

3. In probability, expected frequency tell us the possible outcomes of an event.

Say, for example rolling of a fair die.

The probability of getting 1,2 ...,6 as the outcome is 1/6 but that doesn't mean that when we roll a fair die 6 times, we'll get outcomes of 1-6.

So, the essence of expected frequency is to tell us what to expect in an event (this may or may not turn out to be true).