What's a Venn Diagram, and What Does Intersection and Union Mean?

[amypcy]

thx! this is really helpful cuz i have a mid-yr exam abt venn diagrams tomorrow :P

[amypcy]

thx! this is really helpful cuz have a mid-yr exam abt venn diagrams tomorrow :)

[ferdsbirth]

its like thinking.... if A and B are in union.. then its all of your friends and your mates friends on face book.. but if A and B are the intersection. then it is your mutual friends

[keegs0219]

i do not get this? what? huh? this is stupid

[kenzaki777]

Thanks very very much , and keep it up :)

[Kininet]

very helpful. Thank you so much

[dozziiozzi]

If teachers could teach us like this its so much more straight forward, rather than making it seem hard by spending endless classes explaining this, thank you :)

[miagabayan10]

cool cool cool,.very clear than my boring prof in school ^_^ pls be my teacher :-)

[leoshmu]

@miagabayan10 thanks so much! We've got a lot more videos on our main site that you can check out. Those videos also let you drill down to other tutorials so that you can see how different ideas and concepts connect to each other. In our opinion that's what makes math so interesting, and we hope you get a chance to check it out. Just search virtual nerd in google and you'll see our main site pop up!

Thanks again:)

[hotchickalert1]

tnx chicka i learnt sumting<<<<<<<<

[BOGZASV8MA]

great video

[tzeentch14]

I would like to know how to work out the intersect, if i can't put in confirmed data in. I have a problem in which i have to find how many people out of my data read both types of paper. 25% of people read paper A and 45% read paper B, 30% do not read either paper, how to i find A intersect B

[VirtualNerd]

@tzeentch14 Thanks for the question! Split the A and B venn diagram into 3 variables. a stands for people who only read A, x stand for people that read both A and B, and b stands for people who only read B. Then a+x+b gives you the total number of people that read A or B, and you need to figure out what that is. And a+x gives you how many people only read A. And b+x gives you how many people only read B. Put those equations together, solve for x, and you'll know the intersection!

[RainingxSocks]

Okay, but how do you ACTUALLY find the intersection? =(

[VirtualNerd]

Thanks for the question. We put a link in the video description (the second link in there) that will take you to a video answering your intersection question. This video is focused more on defining the venn diagram, and so we changed the title to reflect that. Let us know if you have any more questions:)

[robertwc82]

that explained nothing on how to use 1 practically

[VirtualNerd]

Sorry this video didn't help you. We were hoping to give you a link to a tutorial on our site that would be more helpful, but YouTube is not allowing us to do that

[robertwc82]

i already found 1 with a satisfying explanation

[VirtualNerd]

Glad to hear that you found what you were looking for. If you wanted to see a video on our site for this, login in to our live site and search for "venn" in the keyword search. Watch the video that shows up and let us know if you find it helpful:)

[Swetlana0]

umm.. you could use annotations..

[VirtualNerd]

Thanks for the suggestion. We're looking into using annotations for this.