Probability density functions (KristaKingMath)

  Рет қаралды 131,271

Krista King

Krista King

11 жыл бұрын

► My Applications of Integrals course: www.kristakingmath.com/applic...
Learn how to identify a probability density function and find the probability that x falls on a particular interval.
● ● ● GET EXTRA HELP ● ● ●
If you could use some extra help with your math class, then check out Krista’s website // www.kristakingmath.com
● ● ● CONNECT WITH KRISTA ● ● ●
Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)
Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”
So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student-from basic middle school classes to advanced college calculus-figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: www.kristakingmath.com
FACEBOOK // / kristakingmath
TWITTER // / kristakingmath
INSTAGRAM // / kristakingmath
PINTEREST // / kristakingmath
GOOGLE+ // plus.google.com/+Integralcalc/
QUORA // www.quora.com/profile/Krista-...

Пікірлер: 190
@yelenayegorova9836
@yelenayegorova9836 4 жыл бұрын
Krista, you are a GREAT Teacher! The Show must go on! Teach as much as you can. I am your grateful student.
@richardagbeko8544
@richardagbeko8544 5 жыл бұрын
Thanks so much. My lecturer thought this in over 30mins and I was more confused than I went into the lecture theatre. In 7mins you've just delivered me from that confusion
@kristakingmath
@kristakingmath 5 жыл бұрын
Oh good! I'm so glad it helped! :D
@ShivamKumar-ev5dr
@ShivamKumar-ev5dr 5 жыл бұрын
Very pleasant experience. Vivid view of the solution is awesome without any complexities.
@noelanish
@noelanish 8 жыл бұрын
Thanks a lot Krista. That was short and informative. God bless.
@georgesadler7830
@georgesadler7830 Жыл бұрын
Professor King, thank you for an outstanding video/lecture on Probability density functions.
@nadiameshkati5271
@nadiameshkati5271 7 жыл бұрын
THIS SAVED ME OMG, thank you so much for explaining so clearly and writing everything out!!!
@kristakingmath
@kristakingmath 7 жыл бұрын
I'm so glad it helped! :D
@AdmCornFlake
@AdmCornFlake 9 жыл бұрын
Whoa, you explained that in a step by step and intuitive way. Thank you, I understand PDFs so much better!
@kristakingmath
@kristakingmath 9 жыл бұрын
That's awesome! I'm so glad it helped!
@jpsartre2685
@jpsartre2685 10 жыл бұрын
You are AMAZING. I'm taking Exam P/1 at the end of this month and you've been more helpful than any online seminar.
@kristakingmath
@kristakingmath 10 жыл бұрын
Aww thanks! I'm so glad I can help! :D
@MikeDunn
@MikeDunn 10 жыл бұрын
jp sartre so how did you do?
@Lunatic108
@Lunatic108 4 жыл бұрын
@@MikeDunn He ded.
@Chuks
@Chuks 9 жыл бұрын
someone should give this lady a cookie!!! Thanks a bunch, this video helped me so much...
@kristakingmath
@kristakingmath 10 жыл бұрын
Glad you liked it! :)
@pavangajendragad2894
@pavangajendragad2894 7 жыл бұрын
AMAZING ... re-learnt something today i had forgot .. Keep up the good work .. Thank you ..
@kristakingmath
@kristakingmath 7 жыл бұрын
You're welcome, I'm so glad you liked it! :D
@bayurisanto945
@bayurisanto945 9 жыл бұрын
Thank you very much.... it is a great and helpful video. I like how you explain it.
@kristakingmath
@kristakingmath 10 жыл бұрын
Yay! That's always what I'm hoping for! :)
@WateryIce54321
@WateryIce54321 7 жыл бұрын
Very clearly said and laid out! Thanks!
@kristakingmath
@kristakingmath 7 жыл бұрын
You're welcome, I'm so glad you liked it!
@wesleyguan6833
@wesleyguan6833 4 жыл бұрын
2020, before UC Davis stat 103 midterm. Thank you very much for your help!
@kristakingmath
@kristakingmath 4 жыл бұрын
You're welcome, Wesley, hope the midterm went great!
@youeclipseall
@youeclipseall 6 жыл бұрын
Thank you so much it is very clearly and well explained!!
@sapotico
@sapotico 7 жыл бұрын
Thank you very much! The best explanation.
@edwardmahaga3783
@edwardmahaga3783 10 жыл бұрын
You've made it simple and easy to understand. Cool!
@likudieconstant3307
@likudieconstant3307 9 жыл бұрын
great video. was really helpful and insightful
@silbridge1155
@silbridge1155 10 жыл бұрын
Thanks again Krista !!
@kristakingmath
@kristakingmath 10 жыл бұрын
:D
@ttctoh
@ttctoh 7 жыл бұрын
Good and clear explanation. Thank you.
@kristakingmath
@kristakingmath 7 жыл бұрын
Thanks!
@conjetapierre8755
@conjetapierre8755 4 жыл бұрын
In 7 minutes I have understood what I struggled to understand for 2 hours. Thank you
@kristakingmath
@kristakingmath 4 жыл бұрын
I'm so glad it helped! :)
@hamzaisrar2344
@hamzaisrar2344 7 жыл бұрын
You made it look so easy .. :) Thanks
@AdventureOften
@AdventureOften 10 жыл бұрын
This was a very helpful video. Glad I stumbled across it! Thanks!
@kristakingmath
@kristakingmath 10 жыл бұрын
:D
@Neueregel
@Neueregel 11 жыл бұрын
Thanks for posting this.
@AndreiMuntean0
@AndreiMuntean0 9 жыл бұрын
This has been very useful, thanks!
@kristakingmath
@kristakingmath 9 жыл бұрын
You're welcome, I'm so glad it helped!
@Renee11123
@Renee11123 9 жыл бұрын
Thank you so much! This video helped me understand PDF much better.
@kristakingmath
@kristakingmath 9 жыл бұрын
Great! I'm so glad it helped!!
@jiboyoseo
@jiboyoseo 3 жыл бұрын
This was so helpful! Thank you so much!!!!
@polishhammer1992
@polishhammer1992 10 жыл бұрын
This was so helpful! Thank you so much!!!!!
@maurodefreitasjr3678
@maurodefreitasjr3678 9 жыл бұрын
Very didactic! Saved my day! Thanks.
@usmankhan-xz7ik
@usmankhan-xz7ik 7 жыл бұрын
Woow... I m n love with u...😀 i Got Good Grades in Calculus by Watching these Videos... and now Probability...
@arthurxafis
@arthurxafis 7 жыл бұрын
This was so helpful, thank you so much!
@kristakingmath
@kristakingmath 7 жыл бұрын
You're welcome! Glad I could help.
@ahmadmustafawahedi6575
@ahmadmustafawahedi6575 6 жыл бұрын
you are the best!!! thank you
@pellermixcoefase1847
@pellermixcoefase1847 3 жыл бұрын
Thanks for the help. Essentially a probability density function is only true when it integral between its limits is equal to 1.
@emmettscully2561
@emmettscully2561 9 жыл бұрын
just made so much sense
@3lii4Car5
@3lii4Car5 4 жыл бұрын
Too many thanks ♥️♥️
@JoyousChris8
@JoyousChris8 8 жыл бұрын
Hi Krista, I love your videos. They are intuitive, practical and clear. Can you please do more statistics videos like poisson,, expected Value, joint density functions, marginal and conditional densitites, mgf, cdf, jointly distributed random variables. Thanks
@kristakingmath
@kristakingmath 8 жыл бұрын
+JoyousChris8 I'm so glad you like the videos! I will definitely be adding more, and I hope to get to statistics at some point in the future!
@TheCliffhukstabal
@TheCliffhukstabal 10 жыл бұрын
Awesome video, thanks!
@kristakingmath
@kristakingmath 10 жыл бұрын
Thanks! :)
@saadanwar4937
@saadanwar4937 8 жыл бұрын
I love her a lot. She is an Angel sent to to save me from Probability and Statistics :'D
@makookmakook
@makookmakook 8 жыл бұрын
Nice ... and unique way of explaining
@kristakingmath
@kristakingmath 8 жыл бұрын
Thank you very much!
@adjoures
@adjoures 6 жыл бұрын
THANK YOU SO MUCH
@PhilippWerminghausen
@PhilippWerminghausen 10 жыл бұрын
Helps a lot, thanks!
@kristakingmath
@kristakingmath 10 жыл бұрын
Awesome! Thanks for letting me know! :)
@MDSiam-xu7nt
@MDSiam-xu7nt 4 жыл бұрын
Thanks from Bangladesh. I am now your new subscriber. Your explanation is excellent.
@kristakingmath
@kristakingmath 4 жыл бұрын
Thank you so much, MD! :)
@ts-gaming-29531
@ts-gaming-29531 9 жыл бұрын
Quite helpful. Thanks. :)
@davidbergaragonzalez5653
@davidbergaragonzalez5653 5 жыл бұрын
Thank you, very helpful.
@kristakingmath
@kristakingmath 5 жыл бұрын
You're welcome, David, I'm so glad it helped! :D
@aliabdu6322
@aliabdu6322 9 жыл бұрын
Thank you , great as usuall
@kristakingmath
@kristakingmath 9 жыл бұрын
Thank you so much!
@mitalgandecha3507
@mitalgandecha3507 9 жыл бұрын
that was great, thanks a lot, how would u find if it was between for instance p(0.4
@Rahulyadav-eo8hw
@Rahulyadav-eo8hw 7 жыл бұрын
thank you so much!
@seemapathare5542
@seemapathare5542 7 жыл бұрын
great expectation. thank you!!
@kristakingmath
@kristakingmath 7 жыл бұрын
You're welcome!
@davidturay4160
@davidturay4160 8 жыл бұрын
Very good lectures, thank you!!!!!!!!!!!
@kristakingmath
@kristakingmath 8 жыл бұрын
You're welcome, I'm glad you like them!
@user-yv6un2ps3f
@user-yv6un2ps3f 8 жыл бұрын
Really thank you for that ☺️
@kristakingmath
@kristakingmath 8 жыл бұрын
+‫حمودة يا كبير‬‎ You're welcome!
@DrJasmineBerry
@DrJasmineBerry 7 жыл бұрын
How do you calculate the PDF if you were given a raw set of data? For example, if I just had a random sample of values 3, 2, 14, 8, 9, 21, 7. What would be the steps to solve the PDF then, instead of starting with a f(x)--function?
@tranceworld4057
@tranceworld4057 7 жыл бұрын
i have an exam tomorrow and you saved me. your voice pretty too!
@kristakingmath
@kristakingmath 7 жыл бұрын
Good luck on your exam, I hope it goes great!
@riaddarawish3941
@riaddarawish3941 9 жыл бұрын
Very very useful. Thank you
@kristakingmath
@kristakingmath 9 жыл бұрын
Riad Darawish You're welcome!
@sohaibkhalid3777
@sohaibkhalid3777 4 жыл бұрын
Two machines are used for drilling oil from an oil well and their operating times can be marked by random variables 𝑿 𝒂𝒏𝒅 𝒀. 𝑿 is a uniform random variable on the interval (0, 1) and 𝒀 is an exponential random variable with parameter 𝛌 = 𝟏, and 𝑿 𝒂𝒏𝒅 𝒀 random variables are given as independent. Analyze the probability density function of the sum of 𝑿 𝒂𝒏𝒅 𝒀 random variables given as 𝒁 = 𝑿 + 𝒀. Kindly solve it.
@touseeffarooq
@touseeffarooq 8 жыл бұрын
i have been watching your video's for over a year. you explain everything clearly and make it easy to understand . do you have any other channels for algebra and stats? thank you for all you are doing.
@kristakingmath
@kristakingmath 8 жыл бұрын
+Ben_freeman You're welcome, and thank you so much for watching my videos! This is my only channel, but I do have a growing algebra playlist, here: kzfaq.info/sun/PLJ8OrXpbC-BP9hyAHCfjloy8RC7vsULiv
@hanzalajamash5376
@hanzalajamash5376 6 жыл бұрын
Thank you so much, can u please make a vid on joint probability density function
@adnankhalid5396
@adnankhalid5396 7 жыл бұрын
Thank You very much teacher....
@kristakingmath
@kristakingmath 7 жыл бұрын
You're welcome!
@tariqhassan6610
@tariqhassan6610 10 жыл бұрын
It is really fantastic video. I just ask if you can help me about the relationship between the autocorrelation and power spectral density. Many thanks.
@salehsameir6505
@salehsameir6505 6 жыл бұрын
HELPFULL THANK YOU
@kalef1234
@kalef1234 8 жыл бұрын
thanks so much. You always come through when patrickjmt doesn't!
@firefly9x9
@firefly9x9 10 жыл бұрын
Thank you!
@kristakingmath
@kristakingmath 10 жыл бұрын
you're welcome!! :D
@IrfanTahir
@IrfanTahir 10 жыл бұрын
thanks u r a life saver
@kristakingmath
@kristakingmath 10 жыл бұрын
you're welcome! i'm so glad it helps!! :D
@muhammadshehbazaslam4549
@muhammadshehbazaslam4549 6 жыл бұрын
Thanks in advance
@11warlen
@11warlen 7 жыл бұрын
Thanks from Brazil...
@pepsico815
@pepsico815 8 жыл бұрын
Thank you for the helpful video
@kristakingmath
@kristakingmath 8 жыл бұрын
+Austin Texas You're welcome!
@lincha3216
@lincha3216 8 жыл бұрын
+Krista King | CalculusExpert.com What's the meaning of points on the probability distribution function curve ?? I can't get it.
@thies2us
@thies2us 9 жыл бұрын
Here, when you integrated the probability density function, you did not include any X (what I mean is for instance, if we had to calculate the mean, we would have to integrate x f(x) dx from 0 to 1). When do we and when do we not include x when integrating the probability density function? Thank you for your awesome videos.
@BukhariTechnologies
@BukhariTechnologies 4 жыл бұрын
Thanks.
@kristakingmath
@kristakingmath 11 жыл бұрын
you're welcome! :)
@christianoben
@christianoben 9 жыл бұрын
Thanks. This was so helpfull
@kristakingmath
@kristakingmath 9 жыл бұрын
You're welcome, I'm so glad it helped!!
@njnjnj69
@njnjnj69 9 жыл бұрын
Wow that really helped! PS: YOU ARE SO PRETTY!
@elvisboyaci1367
@elvisboyaci1367 10 жыл бұрын
that's help a lot. thanks
@kristakingmath
@kristakingmath 10 жыл бұрын
:D
@faisalal-buluwi954
@faisalal-buluwi954 8 жыл бұрын
thanks alot you are really healpful
@kristakingmath
@kristakingmath 8 жыл бұрын
+FAISAL AL-BULUWI You're welcome, I'm glad it helped!
@hsbf6so376
@hsbf6so376 7 жыл бұрын
What if there is a constant in the f(x)? For example I have f(x)=c/3^x. I found what value of c makes f(x) a valid PDF. So then, to find the probability of P(X< or= to 3) would I multiply the integral of f(x) by the value I found for c that makes f(x) a valid PDF?
@kristakingmath
@kristakingmath 11 жыл бұрын
i would think so... but i don't know what you mean by "fun"...
@OSAMALENS9
@OSAMALENS9 8 жыл бұрын
I don't know how to thank you really, I am now doing my PhD in stat and If I need any help I go back to your videos thanks
@kristakingmath
@kristakingmath 8 жыл бұрын
+attract77 You just did! I'm glad I've been able to help along the way.
@dilan197530
@dilan197530 10 жыл бұрын
Thank you
@kristakingmath
@kristakingmath 10 жыл бұрын
you're welcome!
@user-lj4hl4xg3w
@user-lj4hl4xg3w 6 жыл бұрын
thanks
@sohailkhan5328
@sohailkhan5328 8 жыл бұрын
Thank You So Much..This was a well illustration
@kristakingmath
@kristakingmath 8 жыл бұрын
+Sohail khan niazi You're welcome, I'm glad you liked it!
@sohailkhan5328
@sohailkhan5328 8 жыл бұрын
Have you any Facebook page ? If Yes share that..
@kristakingmath
@kristakingmath 8 жыл бұрын
+Sohail khan niazi facebook dot com / calculusexpert
@sohailkhan5328
@sohailkhan5328 8 жыл бұрын
Thank You..
@sohailkhan5328
@sohailkhan5328 8 жыл бұрын
Personal Facebok Account ??
@zahidullahmuhammadi364
@zahidullahmuhammadi364 7 жыл бұрын
thanks allot for your lecture on probability density function it was really helpful, but after trying allot i wasnt able to solve the following problem i hope you will help me f(x)=(1/8x 0
@sayedabedin5368
@sayedabedin5368 4 жыл бұрын
well done
@kristakingmath
@kristakingmath 4 жыл бұрын
Thanks, Sayed! :D
@TFD406
@TFD406 Жыл бұрын
Given the function gx(x) = 4 cos(r.x/2b) rect (x/2b) Find the value of b so that ga(x) is a valid probability density function can you answer for this please
@axelblazeable
@axelblazeable 8 жыл бұрын
Can you tell me : f(x) =2x, 01 be pdf then 1. E(|X |) 2. Pdf of Y = 1/ X
@LazyChristy
@LazyChristy 4 жыл бұрын
Krista are you a university professor? I'm onto my second year of mathematics undergraduate now. Sometimes I see it as a real pain in the ass since I worked a few years and got back into studying without remembering all that much. Your videos cheer me up though because it feels like I'm not even studying since I love hearing your voice, and I actually understand stuff when you explain them. So they're like fresh air after me getting suffocated with confusion from going back and forth between lecture notes and textbooks. This was great, as always!
@kristakingmath
@kristakingmath 4 жыл бұрын
I'm not a professor, but I'm so glad to know that the videos are helping! I know it can be pretty tough to get back into math after being away from it for awhile, but just keep working through it... you got this! :)
@user-qf8ur9sp1b
@user-qf8ur9sp1b 8 жыл бұрын
Is pdf or cdf the one using the integral?
@tch1402
@tch1402 7 жыл бұрын
thx
@abincbabu10
@abincbabu10 10 жыл бұрын
thnx dude :)
@kalef1234
@kalef1234 8 жыл бұрын
how would you find the mean?
@vortyx090
@vortyx090 9 жыл бұрын
Oh, I just love her voice
@MrBigmit37
@MrBigmit37 7 жыл бұрын
Any other problems/videos on PDF? Thanks.
@hyunseokjeong7994
@hyunseokjeong7994 7 жыл бұрын
very very very good video. can I ask you which tool did you use for making this video?
@kristakingmath
@kristakingmath 7 жыл бұрын
Thanks! I explain here: www.kristakingmath.com/blog/how-i-create-my-videos
@hyunseokjeong7994
@hyunseokjeong7994 7 жыл бұрын
Thank you. ('ㅂ')/
@arunsinghmehra7728
@arunsinghmehra7728 7 жыл бұрын
please krista could you upload video related to uniform distribution function....
@Muralikrishnatalluri
@Muralikrishnatalluri 7 жыл бұрын
May i have the total videos of probability and statistics for mca
@Exorcisto1
@Exorcisto1 9 жыл бұрын
Great video, can you tell me please, what is the software you are using in your explanation?
@kristakingmath
@kristakingmath 8 жыл бұрын
+Usama Raed I explain here: kristakingmath.com/my-videos hope that helps!
@Exorcisto1
@Exorcisto1 8 жыл бұрын
+CalculusExpert.com It does help, thank you very much.
@kneyo2012
@kneyo2012 10 жыл бұрын
You should do more examples with trig functions. Otherwise this video really helped
@ArunkumarYadav3q
@ArunkumarYadav3q 11 жыл бұрын
is probability density fun and prob density fun same?
@jnsartwell
@jnsartwell 8 жыл бұрын
Move over Khan Academy. This was an excellent and informative video, I will be looking for others like it. Thank you!
@kristakingmath
@kristakingmath 8 жыл бұрын
+Josh Sartwell You're welcome, I'm so glad you liked it!
@shitup32
@shitup32 9 жыл бұрын
That voice
@Mr1996Ali
@Mr1996Ali 9 жыл бұрын
Great video, keep up the great work. Very clear and concise surprisingly and there are not many teachers who can teach as well as you. I appreciate this video a lot so thank you and have a good day! this video deserves 31415926535... likes :D
@SuperNaicker
@SuperNaicker 7 жыл бұрын
You have a good handwriting
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