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Mathematics 11 Online
OpenStudy (anonymous):

when we do the whisker plot does it really matter that we have to start from 10 ??

OpenStudy (anonymous):

no, depends on the data set. whisker goes from lower extreme to lower quartile & from upper extreme to upper quartile...

OpenStudy (anonymous):

Find the median , the first quartile ( Q1) and the third Quartile ( Q3) 145,159,162,163,165,173,174,177,177,181,184,186,193

OpenStudy (anonymous):

help me

OpenStudy (anonymous):

what number(s) is to the right of 186? can't read it...

OpenStudy (anonymous):

193

OpenStudy (anonymous):

:( are you able to help me?

OpenStudy (anonymous):

145 = lower extreme, 193 = upper extreme. 174 = median, are there any numbers after 193?

OpenStudy (anonymous):

No !

OpenStudy (anonymous):

ok, your quartile values are 25% below average & 25% above average...sorry don't have my calculator with me & i'm having trouble doing this in my head...

OpenStudy (anonymous):

what?? i got the different answer :/

OpenStudy (anonymous):

how? what did you get?

OpenStudy (anonymous):

For Q1 i collect first half of the numbers and the look for median

OpenStudy (anonymous):

and for Q2 you collect rest of the half numbers and then do the samething, find the median

OpenStudy (anonymous):

yep, you're right, i'm sorry, you're abs right...

OpenStudy (anonymous):

and????

OpenStudy (anonymous):

some texts exclude the median when finding the lower/upper quartiles when you have an even number of data above & belowe the median & some include it...not sure which method you're being taught...

OpenStudy (anonymous):

in your problem, you have six values above & belowe the median...so if you use method of inclusion--you include the median...if you use method of exclusion you get a slightly diff answer...

OpenStudy (anonymous):

am i rong?

OpenStudy (anonymous):

no, you are correct...if you include the median...then q1=163, and q2=181...

OpenStudy (anonymous):

and i think method of inclusion is most popular & taught most often...

OpenStudy (anonymous):

make sense?

OpenStudy (anonymous):

i think im right

OpenStudy (anonymous):

i think im right

OpenStudy (anonymous):

yes, you're right.

OpenStudy (anonymous):

:) Yaayyy can u help me with the display data : whisker plot ?? like do i need to start from 10 for those numbers?? or?

OpenStudy (anonymous):

haha, sounds like you know more than I do about what you need to do...i haven't actually taken a stats class yet (want to though), so i only know what i've picked up from engineering classes mainly.

OpenStudy (anonymous):

Oh you took all calculus classes ha?? this is what i dont lik it.. whenever i used to com here for help.. noday knowss about that stats :/

OpenStudy (anonymous):

hey, i tried... plus, it sounds like you know more than what you give yourself credit for...

OpenStudy (anonymous):

Man i dont know anything and i got test tomrw :(

OpenStudy (anonymous):

study, you'll do fine.

OpenStudy (anonymous):

I hop :)

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