How to do probability Videos

• 1. How to - do exam style simple probability questions
• 2. Introduction to Probability
• 3. Conditional Probabilities
• 4. How to do gcse maths probability tree diagram
• 5. How to - do Simple Probability with number lines
• 6. Count outcomes using tree diagram | Statistics and probability | 7th grade | Khan Academy
• 7. Discrete Probability Distributions: Using StatCrunch to Find Mean and Standard Deviation
• 8. The Poisson Distribution

How to - do exam style simple probability questions

User Comments

Saeed Rashed commented on 16 Nov 2015

thanks you for making this video this is awesome

Anees Rahman commented on 20 Feb 2015

Thanks for the help. Not

Mr Skeltal commented on 15 Sep 2013

Nice upload

Introduction to Probability

User Comments

rainie qiqi commented on 08 Dec 2015

Thank you so much, prof~~!i was able to understand the whole things~!

ProfessorSerna commented on 08 Dec 2015

+rainie qiqi Thank you! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

YASSER AHMED commented on 26 Jul 2015

u r a great professor thx a lot

ProfessorSerna commented on 27 Jul 2015

+YASSER AHMED You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

ScuderiaPhineasRacin commented on 24 Jul 2015

If I'm allowed to ask, if a procedure has a probability of 0.9 working on a single case, what is the probability of if working exactly 5 out of 7 times?

ProfessorSerna commented on 24 Jul 2015

+ScuderiaPhineasRacin Use the Binomial Formula with p=.9 q=.1 n=7 x=5

El-Tigre Del-Caribe commented on 16 Jul 2015

Nice and Simple. Well Done Professor. After this logic, you can always watch the more sophisticated methods given in here. With this fundation in mind you're always one step ahead.

El-Tigre Del-Caribe commented on 17 Jul 2015

+ProfessorSerna Dear Professor, Just Subscribed to your channel. Not only the explanation is superb, but also the way you managed the subject. The tranquility, serenity, peacefully. Very enjoyable to grasp the subject optimally.

ProfessorSerna commented on 16 Jul 2015

+El-Tigre Del-Caribe Thank you! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Dimple Soni commented on 15 Jul 2015

Very nicely explained ..

Dimple Soni commented on 15 Jul 2015

Plz Upload more chapters of economics

ProfessorSerna commented on 15 Jul 2015

+Dimple Soni Thank you! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

JKs Hobby Panda commented on 11 Jul 2015

thank you professor !!

ProfessorSerna commented on 13 Jul 2015

+JKs Hobby Panda You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Mushtaq Ahmad commented on 01 Jul 2015

good explaination,,,,,,,very helpful for beginners,,,,,,,,,,,thankx Sir,

Mushtaq Ahmad commented on 02 Jul 2015

+ProfessorSerna ok SIR i will do the same thing,,,,,,,,best regards.

ProfessorSerna commented on 02 Jul 2015

+Mushtaq Ahmad You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Studyphile commented on 01 Jul 2015

I would like to say Thank you very much sir :) It made probability easier for me. :D 

ProfessorSerna commented on 01 Jul 2015

+Frances Roman Sajor You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Conditional Probabilities

User Comments

Haneen Momani commented on 13 Nov 2015

Thank you so much, sir! Very simple and very useful :)

ProfessorSerna commented on 14 Nov 2015

+Haneen Momani You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Busisiwe Masondo commented on 17 Jun 2015

wow this is jst tooo easy now Thanx Proff

ProfessorSerna commented on 18 Jun 2015

+Busisiwe Masondo You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

XOLANI PEACE commented on 19 May 2015

thanks you sir! you really helped me

ProfessorSerna commented on 19 May 2015

+XOLANI PEACE You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Srinivasan Aruchamy commented on 04 May 2015

Great lec... Thank you professor serna... making me probability easy

ProfessorSerna commented on 04 May 2015

+Srinivasan Aruchamy You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Orhan Savas commented on 14 Apr 2015

Thank yo very much!! That was very helpful you know how to explain and teach :) thank you again :)

ProfessorSerna commented on 14 Apr 2015

+Orhan Savas You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Cristine Chen commented on 14 Apr 2015

Thank you sir! You made the concepts very clear!

ProfessorSerna commented on 14 Apr 2015

+Cristine Chen You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Meghan l commented on 02 Apr 2015

Life in my Stats class would be so much easier if you were my professor! You just cleared up 1 week of confusion with 2 videos!!

ProfessorSerna commented on 02 Apr 2015

Thank you! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Mehdi Hasan Aabir commented on 31 Mar 2015

Many thanks professor.

ProfessorSerna commented on 31 Mar 2015

You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

Tu Amigo commented on 26 Mar 2015

Thank you professor Serna. It is clear and simple the way you explain things in this lecture.

ProfessorSerna commented on 26 Mar 2015

You are welcome! Return the favor by subscribing to my channel and go to my webpage and click the G+1 icon and leave a comment. Thanks.

how to do gcse maths probability tree diagram

User Comments

Malia Wafa commented on 25 Jan 2015

PLEASE LEAVE YOUR COMMENT BELOW!! IF YOU LIKED IT THEN LIKE THIS VIDEO

Safie Aliza commented on 26 Jan 2015

It's very helpful but not for me. I have gone through this stage;

How to - do Simple Probability with number lines

Count outcomes using tree diagram | Statistics and probability | 7th grade | Khan Academy

User Comments

Rafid Kham commented on 09 Dec 2015

4 his is grade 6

Discrete Probability Distributions: Using StatCrunch to Find Mean and Standard Deviation

User Comments

TheEliteFew commented on 02 Oct 2015

If I could I would hug you so hard thanks a ton works great and saves time!

Annastacia Cannoy commented on 08 Jun 2015

Thanks! This may have saved my life during my online class!

The Poisson Distribution

User Comments

Robert Wilson III commented on 24 Nov 2015

Why is landa 6?

A Savin commented on 13 Dec 2015

+Robert Wilson III that is the expected number of customers in the nine minute period

Albert Ko commented on 26 Oct 2015

great video Patrick. I tried to extend the value to 10 and I could use help on rationalizing.. I kept the lambda at 6 and raise the x to 10 and when I sum all of them, i get something around 95.7%, which I'm taking as "given the expectation of 6 people per 9 minutes, the probably that 10 comes in is 96%"? Sounds off to me but would appreciate if you can help.

Jake Lee commented on 15 Nov 2015

+Albert Ko If you summed them all, you calculated the probability of 0-10 people coming in (that is 1 or 2 or 3 or 4... or 10), because the expectation is 6 people would explain the high probability. What it's saying is: there's a 96% chance that the number of customers will be between 1 and 10 in a 9 minute intervalHope this helped!

andrew morchik commented on 19 Oct 2015

you might be the reason for the next generation of engineers in america

Abdullah Jimmy commented on 03 Nov 2015

+andrew morchik or in the world...

Jason Voor commented on 10 Mar 2015

thanks dude!

A Savin commented on 13 Dec 2015

+Jason Voor you're welcome bro

Nardha Vargas commented on 13 Dec 2014

Hi, Thank you for the video, but I missed how do you get that 9 customers will enter every 6 minutes? If it is 3 min for 2 customers, should not it be 4 customers per 6 minutes?

YouTube User commented on 11 Feb 2015

You just got it backwards is all. 6 customers every 9 minutes

Mr Levylev commented on 14 Dec 2014

He multiplied both by 3