Calculate the Average of Three Numbers: 2, 5, and 9

Calculate the average

of 2,5, 2,5, and 9 9 .

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Step-by-step video solution

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00:00 Calculate the average
00:03 To calculate the average, we need to divide the sum by the number of occurrences
00:07 Let's sum up the numbers
00:13 And divide by the number of occurrences (3)
00:14 Let's break down 16 into 15 plus 1
00:39 Let's break it down into whole fraction and remainder
00:44 Convert from whole fraction to whole number
00:52 And this is the solution to the question

Step-by-step written solution

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1

Understand the problem

Calculate the average

of 2,5, 2,5, and 9 9 .

2

Step-by-step solution

To solve for the average of the numbers 2, 5, and 9, we will follow these steps:

  • Step 1: Add the numbers together.
  • Step 2: Count the number of values.
  • Step 3: Divide the sum by the count to find the average.

We start by calculating the sum of the numbers:

2+5+9=16 2 + 5 + 9 = 16

Next, we count the number of values, which is 3.

Now, we calculate the average using the formula for the arithmetic mean:

Average=163=513\text{Average} = \frac{16}{3} = 5\frac{1}{3}

Therefore, the average of the numbers 2, 5, and 9 is 513 5\frac{1}{3} .

This matches choice 2 from the provided options.

3

Final Answer

513 5\frac{1}{3}

Practice Quiz

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Calculate the average of \( 10 \) and \( 12 \).

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