816Marjo

A) Mean Median and Mode Definitions

Mean: We call it the average. To find the mean you find the __sum of all data__ and divide by the number of pieces of data.

SOLUTION: 8 + 4 + 3 + 3 + 5 + 7= 30 divide by 6 = 5 __**5**__ __is the average__
 * SOLVE: 8, 4, 3, 3, 5, 7**

Median: The number in the middle of a set of data/numbers, when the data/numbers are arranged in numerical order. When there are two middle numbers the median is the mean.

SOLUTION: 3, 3, __4, 5__, 7, 8 4+5=9 divide by 2 = __**4.5** << is the median__
 * SOLVE: 3, 3, 4, 5, 7, 8**

Mode: The number that shows up the most. There could be two modes.

SOLUTION: 8, 4, __3, 3__, 5, 7 __**3**__ __is the mode__
 * SOLVE**: **8, 4, 3, 3, 5, 7**

B)Square Roots

A square that has a whole number for all the same sides.

SOLUTION:
 * SOLVE: what is the square root of 45?**

C)Percent

Defintion: An equivalent fraction out of 100. It's a fraction or a ratio in which hte denominator is 100.


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

D)Ratio proportion

A comparison of two numbers.


 * SOLVE:**

1. Proportion

Definition: proportion is a relationship to one part to another or to the whole, where they are equal.


 * SOLVE:**