TeXes Science Practice Test

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What is the mean of the following numbers: 25, 28, 31, 35, 43, and 48?

  1. 30

  2. 35

  3. 40

  4. 45

The correct answer is: 35

To determine the mean of a set of numbers, you first need to find the sum of all the numbers and then divide that sum by the count of numbers in the set. In this case, you add the numbers together: 25 + 28 + 31 + 35 + 43 + 48 = 210. Next, you count how many numbers are in the set. There are 6 numbers total. Now, you divide the total sum by the count of numbers to find the mean: 210 รท 6 = 35. This calculation shows that the mean of the set is 35, which aligns with the answer provided. The mean represents the average value of the numbers in the set, and here it indicates that 35 effectively summarizes the distribution of these six numbers.

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