1 proportion z test

Looking at the logic of 1 proportion z tests. You can do it in 3 easy steps.. the key to understanding is drawing the null model.

[@bshmstdie89]

My man... This video is gold and made much more than "a little bit of sense". Saving my butt for my test due at midnight. Keep up the positive energy and great work!!

[@daniellemiller8976]

You have saved my life and my grade with these videos. I am in an online Stats class and have been feeling completed defeated, so thank you for being there!

[@rodelbayon3899]

Cool, this makes me think Stats is simple and effective . . . Hats-off to you Sir !!

[@factficcion4798]

this is the greatest tutroail video I have ever found

[@raghavnandyal]

The best explanation I have heard for Ho Ha ... Hahaha!

[@alexanderwhittemore1491]

Praise be to you, Mr. Nystrom. Thankyou.

[@yololoi4231]

This is the kind of video that makes me believe I can pass the statistics course. Keep up the good work!

[@lochlan1324]

Mate Your a fukin legend thanks a shit-ton, i didn't understand my lecturer after 2 hours on this and you just taught it in 10 min, cheers.

[@mm-zc9no]

sir , you are awesome! dont stop making stats videos, it helps a lot of people. you are one of the reasons I love statistics. thank you.

[@Radild1]

I really appreciate these videos. I have extensive experience in varieties of math. Multivariable Calculus, Modern Algebra, Neutral Geometry, Discrete. Stats is my weak point and you break it down in such a concise and plain-to-see way.

[@himanshu8006]

You are amazing ..... i was struggling with this concept.... you helped to clarify it... thanks.... your way of explaining is fun.... keep it up!

[@teresariggs8971]

SWEET!!!! Finally able to figure a problem out! once I hit the square root after the calculation I got the right figure. I love doing "long hand" math/statistics and this video helped! thank you!

[@rajkadiyala9803]

Dude, You are Awesome! i Like the way you explain things, I'm learning quick and a lot

[@me4901]

That was a great video!. You take your observed value (.44) and then you see how far away it is from the mean (for Ho), then you divide it by how 'all over the place' your model is (your standard distribution). That way you get how many standard distributions it is which tells you how likely it is!

[@engindenizalpman]

Amazing. Just amazing. Please continue to create quality content like this.

[@angelathompson7316]

Hay this is great. It is the light bulb moment. Thank you so much. MUCH MUCH appreciated. Love your video........Angela T

[@bryanna2385]

THANK YOU FOR THIS VIDEO, YOU ARE A LIFE SAVER!!

[@navossler]

You are awesome-you make this doable!!

[@anthonyleon6576]

You my friend, are a godsend

[@cratedtisforcomentin]

You're so passionate its awesome.

[@mohammadsy7419]

woooooooooooooooooow i have never seen like this lesson!!!!! thank you very much

[@kaustubhk9408]

Absolutely Cool! Take care.

[@pritikakhatri2252]

wow,,,u made it so good n fun to watch..hats off to u sir..

[@danielbethke3213]

this was actually really helpful, thank u!!!

[@dahv3340]

Could you do videos on T-test?

[@ddwx]

super super helpful. thank you so much!

[@somakmaitra]

Excellent you make a lot of sense

[@MrCarmen0602]

if i pass in my stat course tomorrow, it's definitely because of you! god bless me

[@danielj5650]

did you pass it

[@danielj5650]

the question is did YOU pass it

[@notanape5415]

We are still waiting Carmen, comeon Carmen!

[@TheTwidget6]

You kind sir are a saint

[@colleenculwell5015]

This man is a GODSEND!!!!

[@Gunterlund583]

brilliant explanation man!!

[@standinginthecrowd5220]

You're a KING

[@m0khm0kh]

Wow.. Amazing!

[@EllenSmyth]

I loved this video so much that I shared it with my girls. My nine-year-old thought that with both think and calculate, there were four steps. And my twelve-year-old was quite dubious of the pee hat until I clarified.

[@InrageDify]

You're awesome!

[@ryueunchae]

Thank you!!

[@chilledchadilss4070]

Wow this helped!!! THx

[@excelfan85]

Omg so happy to see this

[@kjoto2]

It would be really helpful if u could maybe explain in your own way DEGREES OF FREEDOM and HOMOGENEITY OF VARIANCES. maybe some ideas for future videos. other than that, you're awesome, don't stop making videos:)

[@Alythia_]

Lifesaver!

[@youssouf.m]

hey sir, thanks for this explanation. i have a question i hope getting an answser. If the question was has the percentage decrease instead of increase, what would be our conclusion ? with the same sample you have taken. we would reject H0 and conclude that it has decrease but there is no logic for me to get 2 different conclusions with one way calcuation.

[@prestonworthington4319]

Make more plz your fish net theory helped me alot

[@alwaysatthefair]

Thankyou so much

[@shaboigin4725]

How is this done when comparing two samples? For example, population A likes something more than population B. I think you touched on it a little in one of the previous videos, but I would like to see the problem worked. Thanks!

[@MasterNochi]

you substrach p1 from p2. Thats why it is a 2 proportion z test and not a 1 proportion z test. this vid is confusing

[@MasterNochi]

ok nvm now i see the title. so this is a 1 proportion z test you are talking about a 2 proportion z test. getting ahead xD

[@zachnuerge]

Watch at 2x speed. It's worth it...

[@balazsdukai1064]

I don't quite understand why do you calculate the standard deviation with sqrt((p*q)/n)? What I am missing is how p*q relate to the "sum of squares"? I've checked your video on standard deviation but this is not mentioned there, or did I miss something? Could you (or anybody) please explain, or point me to an explanation?

[@MrNystrom]

we are dealing with proportions... categories... not quantitative...

[@nikhilfci]

So if the sample size was more (say 70) we would have got less standard deviation.. this is what confusing

[@ftedg]

yes less S.D

[@dannyrock6666]

MrNystrom this is too good to be true....are you back?

[@barshasharma582]

I like ur expression of 🙂

[@kk-im8ee]

is it possible to post videos of how to create experiments (SRS, stratified, blocking....etc) It's the only chapter that is hard for me to process....it's for the ap exam in 2 weeks

[@kk-im8ee]

kk3 wait nvm. i get it now. i just need help with the p(aub), p(aIb),p(a or b) chapter

[@baldor27]

Man, what if I want to test if Ho: p = 0, Ha: p > 0 ?? n*p would be 0! What test do I use? What can I do in that case?

[@user-qi8es1yi9i]

why it cannot be less than 30%??

[@laurayannarella9454]

I really like this guy. But his examples make me hungry.

[@gogimemon]

looks like the guy did cocaine then suddenly decided to teach stats :D great lecture tho. thank you

[@toddboothbee1361]

if no one likes butter anymore, both the Ho and the Ha are wrong.

[@jennahlswede5586]

How old are you? We are having a statistic debate. Thanks in advance :)

[@shekijones3713]

Please be my teacher