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.



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


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

Found on the Web:


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


Mean, Median, and Mode

Web Games:

Rags to Riches

Mean, Median, and Mode Card Game


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Figure This Challenge #56

  • Complete Solution will be given on May 17, 2015

Complete Solution:



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

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Fun Math Facts:

Math Limerick

Question: Why is this a mathematical limerick?

( (12 + 144 + 20 + 3 Sqrt[4]) / 7 ) + 5*11 = 92 + 0 .


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.


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


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