8-73Vanessa+L

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 * Links:**

Here are some things we learned throughout the year. I have made some questions up for you to answer in each topic. Definition: The average of the data set. To calculate the mean, figure out the sum of data (add up all the numbers inyour data set.) Then divide the sum of all data by the number of pieces of data you used.
 * Quiz for Parents:**
 * A.) MEAN, MEDIAN AND MODE**
 * 1. Mean**

//Question:// What is the mean in the data set? 7, 3, 1, 2, 4, 8, 3

//Parents' Answer:// 28/7 =4

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Definition: The middle number. You must put the data set in numerical order first.
 * 2. Median**

//Question:// What is the median in the data sets? Data set one: 7, 3, 1, 2, 4, 8, 3 Data set two: 1, 10, 4, 8, 13, 20, 3, 3

//Parents' Answer:// data one : 2 data two: 10.5

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Definition: The number that occurs most frequently in a set of numbers. You can have more than one mode. You can also have no mode.
 * 3. Mode**

//Question:// What is the mode in the data sets? Data set one: 5, 4, 2, 3, 1, 4 Data set two: 1, 5, 4, 3, 2 Data set three: 1, 2, 3, 1, 2

//Parents' Answer:// data one; 1 d2: 0 d3: 2

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Definition: Any square with the dimensions exactly equal. The dimensions must have no decimals, they must be whole numbers.
 * B.) PERFECT SQUARES AND SQUARE ROOTS**
 * 1. Perfect Square**

//Question:// Which is a perfect square? Explain why and why not. //Parents' Answer:// every square except for the square 1

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Definition: A number that you multiply by itself to get a product.
 * 2. Square Root**

//Questions//: Estimate the square root of 11 using the perfect square chart. //Parents' Answer:// 3.5

Calculate the square root of 11 with fractions using the perfect square chart. //Parents' Answer:// -

What is the square root of 11 (use a calculator)? //Parents' Answer:// -

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Defintion: An equivalent fraction out of 100. It's a fraction or a ratio in which hte denominator is 100.
 * C.) PERCENT[[image:873_vl_perfect_square_chart.JPG align="right"]]**
 * 1. Percent**

//Question:// Is taking 15% off a given item and then an additional 10% off the reduceed price the same as taking 35% off the original price? Why or why not.

//Parents' Answer:// example $100.00, then 15% 85.00, then 10% 76.5 no it is not the same

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Definition: A comparison of two numbers. Definition: A relationship betwen one part to another or to the whole where they are equal.
 * D.) RATIOS AND PROPORTION**
 * 1. Ratio**
 * 2. Proportion**

//Question:// Zach owns 34 black outfits, and about 5 coloured outfits. If he choses his outfit at random, what are the chances that he will select a black outfit on any day?

//Parents' Answer:// -

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