Variance and standard deviation of a discrete random variable | AP Statistics | Khan Academy

Thank you for helping me on my journey of getting my associates to then trying to get my bachelors!!

So helpful....I understand it so clearly

Thank you!

sounds like andrew tate

I love you guys so much

please which playlist does this video belong? I'm looking for more statistics video made by plz I need it

POEZJA!!!

Why i did not know this channel in my first term !

You teach well ahhhh btw thanks for your amazing video labya we really appreciate your help.❣️🐰

Whata are important terms?

I am seriously sitting here doing my finals and watching this

Khan academy never fails

Short and to the point. Thank you good sir

My Stat tutor can't even put right topic in the right week. So he keeps editing and it drives me crazy. Fml

you are better than my professor..

The crosshair cursor got me flashbacks from the video game I played earlier and now I can't focus anymore :D

does anyone know a shortcut to this?

All the dislikes are from statistics professors who fail to teach all of this. Change my mind

why is it - not plus in v(x) , please someone answer me???

You explained in 6 minutes what took my prof 20 minutes to confuse me in. Bravo

Statistics professor I met cannot make this clear in half semester. You did it in 6 minutes.

As always thank you so much!

Do we not minus the end result of Ex^2P(x) by the mean squared?

no divide by n?

Great work, thank you!

mean 0.1 + 0.15 + 0,4 + 0.25 + 0.1 = 1/ 5 = 0.20

you replace .4 to .8 in the mean calculation: all answers are off

how to find E|X-1| in above problem?

Man, you are God personified

Awesome. Thank you.

Is it possible for the variance to be equal to 0?

what formula was used for the variance?

Very good explanation, thx a lot

hey it should be 0.14 not 0.4, thus making the mean 1.58

My statistics professor is terrible and I just wanted to let you know you saved my semester. Thank you so much for the amazing videos.