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__Mean, Median, Mode__
1)The average amount of the set of data. To calculate the mean, you have to put the set of data in numerical order. Then you add up all of the numbers in the data set. Then divide the sum of all data by the number of pieces of data.


 * Find the mean:** 9,6,8,4,4,2

2)The middle number of the set of data. To calculate the median, you have to put the set of data in numerical order.

D2: 20,4,6,3,1,3
 * Find the Median:** D1: 10,19,8,4,7,2,20

3)The most common number in the set of data. You can have 1 mode, you can also have no mode.

Data Set 2: 2,4,6,8,10 Data Set 3: 4,4,6,7,7 Make sure you put it in __**numerical order**__
 * Find the Mode:** Data Set 1: 1,5,7,7,8,10

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__**Square Root**__
A perfect square is the product of a number multiplied by itself. The dimensions must have no decimals, they must be whole Example: 5x5 = 25 25 is a perfect square.
 * 1) Perfect Square**


 * Which two is a perfect Square ?**

A number that you multiply by itself to get a product Example**:** picture of square and it's lengths To calculate a square root, you have to use your calculator
 * 2)Square Root**


 * What is the square root of 46?**

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__**Percent**__
An equivalent fraction out of 100. It's a fraction or ratio in which the denominator is 100.


 * Is take 15% off a given item and then an additional 10% off the reduced price the same as taking 25% off the original price? Why or Why not?**

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Definition: A comparison of two numbers.
 * 1.Ratios**

Definition: A relationship betwen one part to another or to the whole where they are equal.
 * 2. Proportions**

Question: What is the missing length? 873kyanswers

Five oranges cost $3.00, how much do 10 oranges cost? 873kyanswers
 * Fractions:**