Multiplication Rule in Probability – General & Specific

The multiplication rule in probability is a formula for calculating the probability that two or more events occur simultaneously by multiplying probabilities related to the individual events. The general multiplication rule applies to any...

Population Mean – Definition with Examples

Population mean refers to the average of some quantitative property of the population or group under studying. For example we might want to find the average height of all Australians. As the example suggests...

Empirical Rule in Statistics – Definition & Examples

The empirical rule (also known as the three-sigma rule or the 68-95-99.7 rule) is a rule frequently used in many situations to calculate intervals within which some percentage of the data values lie. The...

Sample Mean – Definition & Application

Suppose you want to know the average height of the entire population of America. One way to do this would be to consider the entire population of America and calculate the population mean. But...

Cumulative Frequency Distribution

Suppose we are given some grouped data in tabulated form along with the frequencies. The cumulative frequency means the total of all the frequencies of the current and previous class intervals. The distribution table...