** Find the Mean**

To find the mean of a given set of data, you need to add up all data and divide by the number of pieces of the data.

**Example:**

1). Marsha earned $15, $20, $10, $12, $20, $16, $80, $18, and $25 babysitting. What is the mean amount she earned?

**Step1:** Add up all the money she earned:

$15+$20+$10+$12+$20+$16+$80+$18+$25= $216.00

**Step 2:** Divide $216.00 by the number of pieces of data

216/9= $24

**Videos**:

How to find the Mean - The best home videos are here

**Found on the Web:**

**Activity**

**Candy Colors: Students count candy by color and then calculate mean, median, and mode.**

**PowerPoint:**

**Web Games:**

**Mean, Median, and Mode Card Game**

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Created by Wanda Collins May 10, 2015 at 1:56pm. Last updated by Wanda Collins May 10, 2015.

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Question: Why is this a mathematical limerick?

( (12 + 144 + 20 + 3 Sqrt[4]) / 7 ) + 5*11 = 9^{2} + 0 .

Answer:

A dozen, a gross, and a score,

plus three times the square root of four, divided by seven, plus five times eleven, is nine squared and not a bit more.

---Jon Saxton (math textbook author)

**Presentation Suggestions:**

Challenge students to invent their own math limerick!

**The Math Behind the Fact:**

It is fun to mix mathematics with poetry.

**Resources:**

Su, Francis E., et al. "Math Limerick." Math Fun Facts.

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