AVERAGES Review of Introductory MathematicsAVERAGESThis chapter covers the concept of averages and how to calculate the average ofa given set of data.EO 1.3 Given a set of numbers, CALCULATE the averagevalue.An average is the sum of a group of numbers or quantities divided by the number of numbersor quantities. Averages are helpful when summarizing or generalizing a condition resulting fromdifferent conditions. For example, when analyzing reactor power level, it may be helpful to usethe average power for a day, a week, or a month. The average can be used as a generalizationof the reactor power for the day, week, or month.Average calculations involve the following steps:Step 1: Add the individual numbers or quantities.Step 2: Count the number of numbers or quantities.Step 3: Divide the sum in Step 1 by the number in Step 2.Example 1:Find the average cost of a car, given the following list of prices.,200; ,300; ,900; ,000; ,000; ,600Solution:Step 1: 10200 + 11300 + 9900 + 12000 + 18000 + 7600 = 69000Step 2: Total number of prices is 6Step 3: Divide 69000 by 6. The result is 11500Thus, the average price of the six cars is ,500.Example 2:Find the average temperature if the following values were recorded: 600°F, 596°F, 597°F,603°FSolution:Step 1: 600 + 596 + 597 + 603 = 2396Step 2: The number of items is 4.Step 3: 2396/4 = 599°FMA-01 Page 20 Rev. 0

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