841Lisa+M

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These are my questions for the portfolio.
 * Parent Quiz**

Mean:

Add all numbers in you data set .(sum of all data) Divide the sum by the number of pecies of data.(numbers) you have.

How you do it:

1,4,6,7,8,10 those are you numbers now what you do is you add them all up.

1+4+6+7+8+10=36

so now you have the sum of all data the next step is to divide the sum by the number of pecies there are in the data set.

36 divided by 6= 6

Now you have the answer.

Median The median is the number in the middle of a set of data arranged in numerical order.

When there are two middle numbers then there mean is the new median.

Example:

3,5,6,9,10,11 =6+9= 15

Mode: The number that shows up the most is the mode. there can be more than one mode. there can be no mode. example: 3,4,5,5,10,15 = the mode is 5

Range:

The difference between the largest and the smallest number in a set of data.

Example: 3,4,5,5,10,15 =15-3= 12

Parents Question:

find the mean median and mode for these numbers: ( don't forget to put in numerical order) 3,4,5,5,10,15

find the range for these numbers: 3,4,5,5,10,15 Answer here: Mean =3+4+5+5+10+15= 42/6= 7 Median =5+5= 10 /2 = 5 Mode= 5 (most frequent #) Range =15-3= 12

Answer page hyper linked to ....8-41 Lm answers


 * __Square Roots:__**

A square root is a number that you can times by its self to get a number. Example: 5x5=25 and 25 is a perfect square now what is the square root of 5? well its just an example so if you don't get it its okay..............still don't now well I guess I tell you. Well the way to find a square root is to find the square root of 5 you must first find the numbers that are closets to it so 2x2=4 2.?x2.?=5 then 3x3=9 then you subtract the number that is after it 9-4=5 so that makes the denominator 5. SO the next step is to find the numerator so to find the numerator you must subtract the that we are trying to find the square root of so 5-4=1 so the numerator is 1.the square root of the perfect square root it is two so 2x2=4 so the whole number is 2. Now put them alll together so 21/5=5 or 2.2x2.2=5. There you go now its your turn to answer some so the question is ........................

Find the square root of 26? (remember no calculator! )

No idea 8-41 Lm answers


 * __Percentage:__**

The definition's of a percent is a ratio of fraction that is out of 100. Question: Is taking 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? 8-41 Lm answers

Yes it will equal the same amount regardless if reduced together or separate your total amount should be the same.