8-73Tony+D

Example: Since there are five numbers we add them all up and divide by 5. 1+2+2+2+3 10 / 5 = 2
 * Mean**: To get the mean add all the pieces of data and divide by the number of pieces of data.

Example: There are two numbers in the middle, 15 and 25. So we add both of the numbers and divide by 2. 5, 10, **15**, **25**, 25, 30 15+25=40 40/2 = **20**
 * Median**: To get the median find the middle number of the pieces of data. If there are two middle numbers add them and divide by 2. That is your median.

Example: There are three 8's so that is the mode. 5, 5, 6, 6, 7, 7, **8**, **8**, **8**
 * Mode**: The mode is the most common number. There can be more than one mode.

Put the numbers in numerical order.

Find the mean, median and mode for these numbers: **10, 12, 14, 10, 8, 7, 9**

8-73 TD Answers

Perfect Square Dftn: A perfect square is a number times itself that has no decimals. Example: 3 X 3 = 9

Square Root Dftn: A number that you multiply by itself to get Example 3 X 3 = 9

Check mark symbol stands for the word square root

Find the Square Root of **14**

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

To find the percentage of a number you divide the total amount by 100. Once you have that number times that number by the percent you want to find. So lets say we are trying to find 30% of 50. 50 divided by 100 equals 0.5, then we times 0.5 by 30 and we get 15. 15 = 30% of 50.

If 5 bags of candy cost $10, how much does 50 bags cost? ( find the answer using fractions or cross products)

To find the answer using cross products you times the numerator with the denominator of another fraction, and if you cant you times the denominator of a fraction by the numerator of the other fraction.

If it takes 20 minutes to drive 60 km, how long does it take to drive 240 km. ( use ratio tables ).

There are two sides of a ratio table like a T-Chart. What you do to one side of the table you have to do to the other. Those are all the hints im going to give you =)