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OpenStudy (bobobox):

Relative tables help!

OpenStudy (bobobox):

@jim_thompson5910

OpenStudy (bobobox):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

sorry I was working on a spreadsheet for this

OpenStudy (bobobox):

Yeah thats okay as long as I learn and get it right!

jimthompson5910 (jim_thompson5910):

ok do you know how to calculate conditional relative frequencies?

OpenStudy (bobobox):

Nope Thats why I need you

jimthompson5910 (jim_thompson5910):

you need to calculate conditional relative frequencies with respect to the columns so what you do is divide everything in column 1 by 280 (since this is the total) divide everything in column 2 by 210 divide everything in column 3 by 100 etc etc

OpenStudy (bobobox):

okay

OpenStudy (bobobox):

one second let my make a spreadsheet

jimthompson5910 (jim_thompson5910):

sure thing

OpenStudy (bobobox):

@jim_thompson5910

jimthompson5910 (jim_thompson5910):

you should have divided the last row by itself, but that doesn't matter really

jimthompson5910 (jim_thompson5910):

OpenStudy (bobobox):

okay

jimthompson5910 (jim_thompson5910):

focus on the pop column what is the difference in proportion between male and female?

OpenStudy (bobobox):

i hear the word difference it make me want to subtract

jimthompson5910 (jim_thompson5910):

yep you subtract

OpenStudy (bobobox):

0.4285146

jimthompson5910 (jim_thompson5910):

now do the same for rap

OpenStudy (bobobox):

okay

OpenStudy (bobobox):

0.6

jimthompson5910 (jim_thompson5910):

which difference is larger

OpenStudy (bobobox):

rap

jimthompson5910 (jim_thompson5910):

so according to this http://mathbitsnotebook.com/Algebra1/StatisticsReg/ST2TwoWayTable.html it says `The bigger the differences in the conditional relative frequencies, the stronger the association between the variables`

OpenStudy (bobobox):

okay

OpenStudy (bobobox):

im sorry do you think you oculd simplify that for me?

jimthompson5910 (jim_thompson5910):

The larger difference in rap means that more males like rap than females. So this is considered positive association.

jimthompson5910 (jim_thompson5910):

If the two conditional relative frequencies were nearly identical, then there would be weak to no association (ie the two would be independent)

jimthompson5910 (jim_thompson5910):

this tells us the variables are connected in some way

OpenStudy (bobobox):

okay so would it be d or are we not close to the answer yet... thats my guess becuase it discusses rap

jimthompson5910 (jim_thompson5910):

yeah I'm thinking D as well because of the largest difference

OpenStudy (bobobox):

we have to be positive with all of the answers

OpenStudy (bobobox):

i can't have any slip ups

OpenStudy (bobobox):

are we ready for me to submit the assignment? If I get under 70 I won't be able to take my final exam

jimthompson5910 (jim_thompson5910):

I'm pretty sure, but others can chime in too if they want

OpenStudy (bobobox):

I am going to submit, It will tell me the answers instantly

OpenStudy (usukidoll):

@bobobox do you find out the answer right away or does that take a while?

OpenStudy (bobobox):

@UsukiDoll The answer was Correct!!!!!!

OpenStudy (usukidoll):

that's good! :D

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