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Find the Mean. Mrs. Planavsky 4 th Grade. Math Background. The mean is an average. You can find the mean by dividing the sum of a set of numbers by the number of addends To check the mean, multiply it by the number of items. The product should agree with the regular sum.
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Find the Mean Mrs. Planavsky 4th Grade
Math Background • The mean is an average. • You can find the mean by dividing the sum of a set of numbers by the number of addends • To check the mean, multiply it by the number of items. • The product should agree with the regular sum.
Today’s Objective • Find the mean, or average, of a set of data
Learn • Janet earns money walking her neighbor’s dogs. Over 4 days she earned $4.75, $3.60, $8.25, and $5.00. • What is the mean, or average, amount Janet earned each day?
So, the mean, or average, amount Janet earned was $5.40 per day.
Find the mean. 7 7 10 12 14
Find the mean. 3 5 6 9 12 13
Find the mean. 143 99 213 407 698