We cover the topics in Statistics II, averages.
While we commonly use the term “average” to mean the “arithmetic mean” in statistical sense, there are other kinds of averages in statistics.
We call the data scores, and the frequency is a term used to indicate the number of times a particular score occurs. We can use a frequency table to represent data, and use a histogram to represent the table.
Apart from the arithmetic mean or just mean, which is the sum of all scores divided by number of scores, we also have:
* Mode. which is the score that occurs most often in a distribution;
* Median, which is the middle score in the list (if the list has even number of scores, the median is the average of the middle two scores).
Homework:
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