Probability Tree Diagrams 2

Using a probability tree diagram to calculate probabilities of two events which are not independent.

[@syedabdullahraza2972]

Omg finally i found this vid this helped me in my finals THANXXX!!! btw who here is watching this in 2020

[@scottatlas7359]

Not confusing at all. Very helpful.

[@azlynazeem]

Just a note to thank you for the magnanimity and generosity of making such an invaluable post in the interest of education. Yes this is fantastic and of immense benefit. Thank you sir!

[@lena7665]

I was confused with Jimmy picking the blue sweet first too but basically, the tree diagram is there to show you all the possible answers to the "First pick" as it can be blue or red. The probability of the blue is 7/10 and then we go from there to assume he picked a blue first so now it's 6/9. The probability of the first sweet being red is 3/10 and we go on from there to say that if he did pick a red it'll be 2/9.

[@ruthkativu3642]

I was actually wondering how he knew if he took a blue one lol. Thank you

[@mani1432u]

You sir are a legend i didn't understand anything when my teacher thought me, but your video is awesome thanks

[@monicmonitor]

my teacher took 1 hour explaining this to me and i still dont get it. and now, after 5 minutes. i get the whole thing ,,,, amazing

[@DavidandAngeloDNA]

Thank you so much! Totally refreshed my memory from early this year...god damn freshmen exams

[@kayleerainers8028]

Its 2022 , nd ive been struggling with drawing a dependable tree diagram but this really helped so much , thank uoo

[@karlymiranda3869]

Thank you for making this video!!!!!

[@rfbarrow]

He doesn't have 7 blues left, but the probability of B then R is calculated as 7/15, which doesn't mean that there are 7 blues.

[@sarisavuletich9627]

maths is fascinating

[@ohnoa]

LOL LOSER

[@sarisavuletich9627]

That's mean

[@lulujennings8885]

LOL 2nd definition of gnarly, 4 eyes

[@amaka.06]

@@ohnoa Lol SHUT UP

[@ohnoa]

@@amaka.06 sad

[@strangeperson700]

Thank you. I love you.

[@kneve]

Where in the problem does it say he ate a blue one 1st? I thought he'd just randomly picked one - or is it a given because the teacher just told us it was a blue one? BTW, your videos are very clear & very easy to understand. Thank you!

[@johnmellor932]

So, you don't need to add them all up at the end?? I got 153/90 as my final answer.

[@amaka.06]

It depends on the question

[@Siya1807]

Both of your videos are excellent!! Thank you!!

[@mollyf1998]

Very helpful, thank you so much!

[@kryz9able]

i don't learn anything from my teacher. this is much easier to understand .Thanks!

[@elizathornberry1991]

This would have explained it a hell of a lot better than my lecturer!

[@AaronSunde4]

Very helpful for my college stats class! Thanks

[@edwinaldrin7789]

thanks mate i fond this..... what ever it is helpful Edwardo

[@anonymous70611]

This was brilliant its really well explained

[@rfbarrow]

To do the drawing etc I used ActivStudio software by Promethean, which is usually used for smart boards in classrooms. To make the movie clip I used Camtasia.

[@sadie1837]

Very helpful, thanks.

[@azizanasoro8954]

Thank u soo much ,this was soo helpful

[@davidkhachidze9232]

Nice explanation. Well done.

[@richardgordon]

Brilliant! Thanks again.

[@SLINNshady20]

Thats my GCSE sorted... ;)

[@chaz7716]

;)

[@lockyb91]

@LuffMileyCyrus he has only taken one sweet in the first pick so there will be 9 sweets left and then in the second pick he will take another sweet so there will be eight sweets left. so all up Jummy has only taken two sweets. there is 8 sweets left

[@Servanting]

hmmm i bet for the igcseexam questions will be extra harder than this. not to say that this is hard, its easy and hats for the video D

[@jubilantbenjamin5849]

u are the legend

[@williamsonapril1]

thank u really helpppeddddddd god bless

[@LpsBluesky]

omg thanks so much you are a life saver

[@kathir758]

Thanks for this, but the questions are complicated and tricky cause there was an earlier one i did. Well you did surprised me i thought it was the same one but this one is a bit different.

[@samiul8439]

thank u u got me and 97%

[@Karim1scorpion]

YOU ARE THE BESSSTTT !!! THANKK YOUUU MANN !!!!

[@rumpobest9198]

nice vid :)

[@nh1622]

Thank you Ron

[@Idropfatklds]

veryy good guide mate thanks alot

[@nanalili31]

Thank you you are very helpful

[@popmusic533]

Gr8 and helpful

[@2222programmer]

hey fella ,,,, I like your accent :)

[@chaz7716]

BIG BRAIN MAN

[@612curtis]

This is good revision :D

[@OFCL1]

he is goooooood !!!!!!!!!!!!!!

[@DontWorryWLU]

What program do you use?

[@SuperNerd707]

question, are the events disjoint?

[@isrln]

Thanks really helpes

[@86Miguelisimo]

can you please help me with my problem? 1. suppose you have five good (event G) fuses and two defective (event D) one have been mixed up. we select and test two fuses one by one, at random and without replacement. G1 event the 1st fuse is good D1 even the 1st fuse is defective G2 event the 2nd fuse is good D2 event the 2nd fuse is defective for some reason when I add up the numbers they dont come up to 1? can you please explain this problem

[@rfbarrow]

Miguel Salinas P(G1)=5/7,P(D1=2/7). Then P(G1G2) = 5/7*4/6, P(G1D2)=5/7*2/6, P(D1G2)=2/7*5/6, P(D1D2)=2/7*1/6. These probabilities add to 1.

[@86Miguelisimo]

Thank you! I dont know why i am having so much problem understanding this

[@zeinababdi5130]

Ron Barrow

[@fazlayj]

I came to here to learn how how to complete a tree diagram with three branches,not these basic probabilities,anyways thanks.

[@fawadzab]

hahahaaaa this question came on my paper GCSE unit 1 lool

[@lucykaluwa925]

Thanks

[@w31rdTARANtula]

If hes picked a blue sweet and is left with 6/9 how does he have 7 blue sweet the next time he picks a blue.

[@TheLadyindigo87]

how did you get 6/9 in the second pick?

[@chickenshopbossman5099]

cause he took one out oh wait 4 year ago

[@rimurutempest6768]

@@chickenshopbossman5099 yeah that's why oh wait 2 years ago

[@Saraaaggwgwhww]

​​@@rimurutempest6768 yep oh wait 3 years ago

[@rimurutempest6768]

nah I remember this haha, had to revise on it the day before the test at night.

[@storm3698]

hang on. No where does it say that he ate the blue sweet first. is it because you are assuming that the chances of him picking a blue sweet first is 70% that we can say that he probably picked a blue first and ate it. Question makes no reference to sweet colour eaten.

[@clarasolis6709]

storm3698 I'm sure he got that wrong as it's supposed to be 6 over 9 as she ate it. He made a mistake!!

[@storm3698]

Clara Solis thanks x

[@rfbarrow]

yes it does

[@danielgorton6374]

You change the question mid way through and don’t show the answer to first situation. That’s not all that helpful (I know you can back track, but would be helpful to follow through first question before changing)

[@kneve]

Nevermind - I think i get it!

[@RpitPlays]

o bhai volume itna cum kyon hai? kuch sunayi nahi deraha

[@nuhakhondker9360]

it has bad sound volume

[@lilzanta]

yo

[@shenghuang8679]

Huh

[@masterors]

My teacher disliked this because he can teach better than her :)

[@adam-azzam]

too quiet

[@avatarlord1234]

This was really confusing, i have so many questions for this that dont make sense

[@rafsanbinhossain9261]

exactly