Mean, median, and mode are different measures of center in a numerical data set. They each try to summarize a dataset with a single number to represent a "typical" data point from the dataset.

Here we give you a set of numbers and then ask you to find the mean, median, and mode. It's your first opportunity to practice with us!

The mean (average) of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered …

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To find the mean, you add up all of the numbers together and then divide the sum by the total amount of values (there are 4 values). Since only one of those numbers is increasing, the …

Practice calculating and interpreting the mean and standard deviation of a discrete random variable.

The lesson demonstrates conducting a t-test for a population mean with a teacher experience sample. It explains the t-statistic calculation and the p-value interpretation to test a null …

Learn Statistics intro: Mean, median, & mode Mean, median, & mode example Calculating the mean

If you remove a number that equals the mean of the original list of numbers, the mean will remain the same. So if you remove a middle number, the effect on the mean will depend on how that …

Example showing how to check which conditions have been met for a t test about a mean