September 25, 2009

Chapter 2 Vocabulary

opposites
absolute value
inequality
coordinate
ordered pair
ordered triple
graph
additive inverse
reciprocal
multiplicative inverse
terminating decimal
repeating decimal
irrational number
density property
reflexive property
symmetric property
transitive property
closure property

I think everyone described or defined the difference between mean and median, but what conclusions can you draw from the difference between the mean and the median (take period 6 for example)?

p.107 (1-14)

19 comments:

SoohyungLPer6CMMS2010 said...

Just as I said before,
if the Median is higher than the Mean that means less people did well on the test than the average scores

Mr. Gerson said...

Is it that or the inverse of that? Maybe someone needs to explain what an outlier is.

Eric X. Per. 3 TA said...

Period 6 had a mean of 87%, and a median of 93%. They are different because there was probably an outlier in the scores. An example of the Period 6 scores could be 47, 90, 90, 95,and 100. The mean is 87% and the median is aroud 93%(acutally 92.5). 47 is the outlier, and it affects the mean, but not the median.

sameri per.6 said...

an outlier is th number that sticks out the most
ex:87,93,79,27,84
^
this number is lower than the rest of the numbers and therefore sticks out

ex2:607,608,614,879,603
^

sameri per.6 said...

oh yeah and i think that about the other question the answer is that most of the people got high scores and maybe 1 person may have gotten a very low score that probably affected it

Natasha L Per.4 said...

an outlier is a number in a number set that is far from all the other numbers on a number line. For example, if the number set is 1,3,4,7,54 the outlier is 54 because it is so far out from all the other numbers.....

SyaraS.per5 said...

Hey Mr.Gerson !!!
I guess i am the second one..Whoohoo!! have a nice weekend Mr.Gerson!!

SoohyungLPer6CMMS2010 said...

OH!
I forgot about the outlier!

Anonymous said...

how do you do numders 1 and 2

Anonymous said...

how wold you do number13

Anonymous said...

Mr. Gerson when is are next test so i can study

sashaperiod6cmms2010 said...

An outlier is a number that stands by itself.
Example:
2,4,9,7,10,56,12,1
The outlier would be 56. It stands farthest away from rest of range of numbers.

Example 2: 400,109,393,415,430,427
109 is the outlier here. An outlier can either be smaller or larger than the rest of the range of numbers. It is from 390's to 430 in this case.
The outlier affects your mean because it make it much lower or higher.

Sorry most of my posts are so long!

SyaraS.per5 said...

oh!! but when i typed in i was the second one......

taylor h per.6 said...

can someone please explian to me how to do numbers 1,2 and 3 i dont get it!! :)

ZahaSPer5 said...

I dont get # 1 & 2!! Please help!

taylor h per.6 said...

srry i meant i need help with 3,4, and 5 i get numbers one and 2 but not completly

sashaperiod6cmms2010 said...

Can anyone please help me with number six, seven, eight, twelve through fourteen? I am confused; i forgot to bring my book home. Silly me for forgetting to bring it home!

SyaraS.per5 said...

Anyone who has a problem just go through the chapter and u will find ur answer.(check all the example's!!!)

Anonymous said...

HI MR.GERSON
whats up[?
i finished my homework
anyone need help?
ps.cant get into my gmail so im just gonna use this one until i can make a new one sorry