Ms. Nichols recorded the amount of time, in minutes, that she exercised during the first ten days of the month. 30,45,25,25,35,5,40,35,40,20. What is the mean of the data set?

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The answer to this question would be 30!

This is because to find the mean you have to add everything up, then divide it by how many number's there are so for this problem it is:

30 + 45 + 25 + 25 + 35 + 5 + 40 + 35 + 40 + 20 = 300

Then Divide!

300 ÷ 10 = 30

So 30 is your answer!

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you need a common difference between consecutive terms to be constant, like 1,2,3,4 or 2,4,6,8, or 1,3,6,9