Expected Value of Binomial Distribution

Expected value of a binomial distributed random variable

Category:

Education

Tags:

• expected
• value
• binomial
• distribution
• E(x)

[crusader584]

you have a good voice

[shazaduh]

I really enjoyed your prob and stat series. Would you please do a video on standard deviation for a binomial distribution.

[drmugtaba]

Great. Tough but certainly enjoyable.

[mayurkarnik]

Oh look at this! My iPod wants to sync.. he hee. I love this guy, he's doing such a great service to the field of education.. and so casually.

[Vupadhayay]

Great video very good explanation...Little confusing but great effort..!!

Thank u very much,,!!

:P

[insomniacgrace]

thanks for this video, this is a great help for my son.

[rafaelhsouza]

@mrkotfw

I'm not sure if we had the same doubt, but I was confused too. After a good time looking at the summation I realized you solve it using Newton's binomial theorem. Using it, you can derive that Sum(k = 0 to N) [p^k * (1-P)^(N-k)] = [p + (1 - p)]^N = 1^N = 1

[drbandar]

it is very hard i could not understand

but, thank you so much

[mrkotfw]

Thank you! I got to the derivation. Except I didn't know what to do with the summation!

[cyruses89]

thumbs up if you tried to scroll back up thinking the video would rewind

[azavgz]

Khan, would you have/make a video on the beta distribution for decision-making?