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At an early age, you probably learned about the mean, median, and mode - favorite topics among standardized tests! Perhaps in high school you also learned about standard deviation and...
“What was the class average?” After a particularly difficult test, this is often a common question students and even parents sometimes ask. Another word for “average” is “mean,” in...
Finding the mean (or average) of a set of values is used in many contexts, including business, finance, and research. Microsoft Excel can find the mean for any set of values you choose as...
Mr. Jackson, a history teacher at Middletown High School, teaches two classes of College Prep United States History. Each class has 20 students. After a particularly difficult test, he presents...
How To Interpret Standard Deviation (3 Key Concepts To Know)
It is one thing to calculate a standard deviation from a data set. However, it is another to interpret it and find out what it is telling you about a data set. So, how do you interpret...
When Does Mean Change? (3 Things To Know About Increases & Decreases)
Are you trying to figure out what happens to the mean of a data set when you add or remove a point? The change in the mean really depends on how the data point relates to the original...