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Statistics is a set of methods that are used to collect and analyze data. Statistical methods help people identify, study, and solve many problems.… See more » Average is a number that is typical of a group of numbers. People usually think of an average as a mean. A mean is the sum of a group of numbers… See more » Mean, in statistics, is the sum of a series of numbers divided by the number of elements in the series. Suppose five children weigh 68, 61, 68, 69,… See more »