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bobobox
 one year ago
I need help with a couple question on two way frequency tables
bobobox
 one year ago
I need help with a couple question on two way frequency tables

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bobobox
 one year ago
Best ResponseYou've already chosen the best response.0ONce someone asks I will post a screencap

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 heres the question

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0what are your thoughts on this?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0Im looking for a working pen one moment

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay let me write down the problem

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0sorry i just found my paper

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0Okay so I think I need to look at the comlums and ad the two row in each colum together to see what number I must divde by?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0Well I would say so I have numbers to add together for the bottom row of my colum

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0all they want you to do is rearrange the given info into a table then add up the rows to get the row totals afterwards, add up the columns to get the column totals no division is done at all

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0really? Im having trouble so I watched a kahn academy video and they said to divide! Now I am really confused

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0you divide if they wanted RELATIVE frequencies

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0normal frequencies are counts (whole numbers) relative frequencies are percentages, fractions or decimal form

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay what about two way frequecies

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0how many men like playing sports

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so "11" goes in the "Men" row and "Playing sports" column

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0the other values are done in a similar way

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0again they just want normal frequencies

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0notice how they have "row totals" and "column totals" do you see how those numbers were formed?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0Okay can you double check my answer for the next?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0now notice how the keyword "relative frequency" comes up

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0it's not a simple count anymore

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0that "relative" changes everything

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0Oh do I divide with this one?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0yes division will play a part now

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay let me take a crack at it. See I think I watched a video on realative

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0yeah it sounds like it too

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0because I was dividing the number in the colum/row by the colum total In the chart I made with they numbers I was given and got the same answers in the chart B!

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0Notice there are 26 people who are in high school and like action this is out of 128 people total (see table in choice A or you can add up all the numbers)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so the relative frequency of those who are in high school and love action movies is 26/128 = 0.203125 that rounds to 0.20

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0in a normal frequency table, "26" goes in the "high school" and "action" column in a relative frequency table, "0.20" goes in the "high school" and "action" column (since 26/128 is roughly 0.20)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0and like before, the other relative frequencies are calculated in a similar way

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0so you divide by 128? I divded by 46

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0it was that comlum total and I listened incorrectly

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0oh im dividing by 128 and i get it now its D

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0well when they mean "relative" without specifying anything further, they mean relative to the entire group so 26/128 = 0.20 roughly means that approximately 20% of the entire group is in high school and likes action movies if it said "relative to action movies" then it would work. Or if it said "of those who like action movies, what is the relative frequency of those in high school?" then it would work

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0Can you teach me what this means?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0let me look it over

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0I want to say B for some reason because they didn't say relative

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0I'm still thinking on this one

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0ok hopefully I have the right interpretation

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0they ask "Which of the following is a twoway conditional frequency table for gender?" so in a sense, they want to compare the results between genders (to see which percent like Aspen for instance)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0it might help to take that original table and convert it to a frequency table (not a relative frequency table)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0let's say there are 100 people how many of those 100 people are male and like aspen?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.022% of 100 = ???

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0how many females like aspen?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so 22+16 = 38 people like aspen

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay aand 63 people like nyc

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.022 males like aspen 38 people total like aspen if you just focus on aspen (ignore the other location), what is the percentage of males who like aspen?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.044% of males enjoy aspen

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0ignore the other location

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0so is it still 22 or is it 44 i multiplied by 2 because it would make sense if there was one hundred men 44 enjoy aspen

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.022 males like aspen 38 people total like aspen 22/38 = ??

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.022/38 = 0.57894736842106 which rounds to 0.58

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so 58% of the people who like aspen are male

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0fill in the blank ____ percent of the people who like aspen are female

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0is it A?!?!?!?! eeeeeeeeeee

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0that's assuming my interpretation was correct

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay next one lol so srry but I am learning a ton

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0that was the question and options

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0your thoughts?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0no clue I need to learn that fancy vocabulary

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so all of the terms are unfamiliar?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0if you tell me what each word means I might be able to make an educated guess

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0Ok let's make up an example

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0Let's say we have males and females and let's say we want to know if they like coke or pepsi I'm just going to randomly make up data Males: 12 like coke, 10 like pepsi Females 8 like coke, 13 like pepsi

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay I get that so far

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0dw:1435452321297:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0go ahead and fill out the table (click the pencil to draw on my drawing)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0the 86 is incorrect, but everything else looks good

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0you only add either the row totals OR the column totals (pick one)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0the numbers I'm circling are called `joint frequencies` dw:1435452635430:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0they are frequencies (whole numbers, counts of something) the "joint" means the frequencies represent 2 different things. For instance, the 12 represents "male" and "coke" at the same time think of "joint" as in "joint bank account" (2 or more people own/access it) or as in "joints in your body" (connecting 2 bones together)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0now if you divide every value by the total number of people (43), you will get this dw:1435452804260:dw

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay i see how you got that

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0these circled values are called `joint relative frequencies` dw:1435453025373:dw they are basically `joint frequencies` but divided by the total (in this case 43)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0for example, 0.28 is a `joint relative frequency` it means "28% of the entire group is male and likes coke"

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0notice how 43*.28 = 12.04 which is pretty close to the original 12

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0ok more terms

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0these are marginal frequencies dw:1435453144401:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0they are in the margins (off to the side, think margins on a paper) and they are frequencies (whole number counts)

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0wait does frequency=whole number counts=?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0frequency is just a fancy way of saying how many times it happens

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so yeah it's a count of something

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0marginal relative frequencies are basically the same as joint relative frequencies just now you focus on the margins dw:1435453312087:dw

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay @jim_thompson5910 sorry if I am a little spotty dont worry I am still here

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0so I m thinking of the answer to the actual question now

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0what are you thinking so far

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0it means a piece of, or percentage of

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0it's like a proportion

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay I am making an educated guess here.. is it B? since its a decimal

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0and why is it not D?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0hmmm... I think it's B becuase it represents two things, female students and dancing, but then again it could be marginal

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0is that value in the margins?

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0the colum next to it is the total value of the margin

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0so it can't be a marginal relative frequency

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0okay so my educated guess was right!

bobobox
 one year ago
Best ResponseYou've already chosen the best response.0here is the next one you are really helping me

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.0post in a new question. I'm lagging really badly since there's so much on this post
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