z test p-value approach

[newbiostat]

you made things much clearer for me on this, all though I did have to watch the video about 10 times,( rewinding numerous more) because I was trying to figure out numbers....and it doesn't help that you're very beautiful. I'm still having trouble figuring out the sig. diff. when 'mu' and "std. dev." is not known..

[Heavymetalisforlife]

Right after she says "hi", I was thinking bye, get back to the kitchen x DDD

[Sam10947]

since when chicks know statistics..i guess they can stick to the basics. Try non irreduceable stochastic optimal control and brownian motion problems

[tcreelmuw]

@Sam10947 I loved studying Markov processes. Brownian motion, as I am sure you are aware of, is just a strong Markov process. Now the interesting thing is that you are apparently using the Brownian motion to describe something. So, are you using the nonirreduceable stochasitc optimal control to model behavior in nature, machines, or in finances? This is a very interesting little project. I would love to see what problems you are specifically talking about if you can handle a CHICK showing you up

[Sam10947]

@tcreelmuw

A chick would show me up if she comes up with Lemme or theorems or some sort of algorithm to solve exponentially complex divergent problems, or solve the next challenges, like the control of a fusion plasma profile. so what is ur point ? am i sensing the fact that u r trying to portray ur offense or is it the fact that u didn't construe and distinguish a sensical observation from sarcasm

[Sam10947]

@tcreelmuw

i'm just grown up man with warrior heart and a kid attitude, hence the joke

[bobdaugherty820]

I want this video on my T707 phone.

[enarolloyd49g]

This is a very "hysterical" video. =p

[WizDone]

Thanks

[Saronaist]

You are the best. Thank you so much. And you are beautiful too. Have my final today, and u made things easier in less than 5 minutes. WOW!

[marniemarie1]

Incredibly helpful, thank you. Not sure why my prof couldn't articulate this in a two hour lecture, when you managed in seven minutes!

[milfhuntah17]

get them boobies out and flyin

[oqendro]

:29 cuutiiie

[Amarz05]

Hottttieeeeeeeee



[IbanezV70CE]

why do we reject the null hypothesis when the p value is less than the level of significance?

could you please give me an english explaination to why its rejected?

[tcreelmuw]

@IbanezV70CE The significance level is our rejection region. It is the maximum area that we require to reject the null. The P-value is the area of our data (the test statistic). It is our evidence against the null. If the P-value is inside the rejection region, we have the evidence to reject. If any of the area of the P-value is outside the rejection region, we don't have enough evidence.

[IbanezV70CE]

@tcreelmuw I see. Thanks for clearing that up. And thanks for posting the video.

[POLAK1Nysa]

@tcreelmuw Can I calculate the P value this way for a T-test?

[S4disticJ0k3r]

Do smaller alpha's indicate greater degrees of significance?

[tcreelmuw]

@S4disticJ0k3r Yes it does.

[9006615]

thanks for the help lady... you real good.. besbelieeeedat

[nicholden1]

Thanks you helped me out :) Appreciate it and I look forward to youtube-ing more of your videos during exams.

[MwilaKN]

This has been very helpful to me...You really know how to simplify stuff. hats off!!!

[TheWingsofJustice]

Thank you for your help! Ignore the unwanted comments.

[maxclark1991]

Defffff gonna get on that...Deffffff

[BTRUIIU]

I'm sorry, in finding the Z-value of the critical value 2.05 (by going down to 2.0 and over to 0.05) I get 0.4798. Only after subtracting this number (0.4798) from .5 do I get 0.0202, and that should be made much clearer than is explained in this video (position 3:13). From the Z-Table, 0.0202 can not be found at 2 + .05, but rather from subtracting the actual number found (0.4798) from the half. Isn't that so? Thanks for the otherwise great lessons. Please don't miss important steps.

[tcreelmuw]

@BTRUIIU It actually depends on the z-table you are looking at. Most z-tables give you the area to the entire left of a certain z-value. When I am referring to the z-table I am referring to the one that is found through Weiss' Elementary Statistics. So, I didn't miss any steps, you just weren't looking at the correct formatted table.

[zogger64]

By FAR the hottest math teacher I have ever seen.

[2010aurnob]

why would you divide the sigma by n for finding z?

[lonilittleboots]

@2010aurnob yeah that's completely wrong.

[gopaulnarin]

MILF

[youpipeify]

I thought beauty and brains were not correlated. I have been proved wrong by you. I would attend all your classes and fail on purpose just to attend them again. You are very attractive.

[TheManGuyDude]

I had trouble concentrating because you're too beautiful

[disasterVoiceNZ]

On step 4, when I looked at the table, 2.05 came up as .4798. How'd you get .0202?

[Ms4dmin]

You seem really nice - thanks for the help, I have a test Friday!!!

[Maree131]

good job!



[Butch1982]

U r too cute. I cannot concentrate. I guess I will scroll down and watch a bald, old, ugly guy explaining statistics...

[DAtNizzaYOuKnOw]

There needs to be more women math instuctors to make the subject matter of a higher interest

[hohohee1]

you're so hot, i couldn't concentrate and i failed the final because of your tits

[rac2450]

@hohohee1 hahahahahah this is so much typical and can apply to so many people...good you're saying it out loud man!

[Aklilusas]

I would like to tell you that your explanation helped a lot. But , in thus case, what about if the confidence interval is not given? What's the P-Value?

[raj4221423]

......wow

[raj4221423]

best boobs i ever saw.......wow

[anndrewzZz]

EVERYONE WATCH 5.13 WOAH!

[Butch1982]

@anndrewzZz Yes! me too! 5:13 is awesome!

[anndrewzZz]

oh god, milf.

[ixsolis]

thank you, very helpful

[BMFWarwick11]

Yes lots of help I appreciate it and you are smokin' hot

[rafuzibitch]

thank you.

[fernandoatan]

gezz.....really open my mind....thanks 4 d help....

[highonsugar25]

Thanks for the video. I have an exam in 2 weeks and this really helped me understand the material. Could you please do another tutorial on hypothesis testing using a proportion instead of mew?

Like...

Ho : p = 9.2

H1 : p > 9.2

[bobichina]

Really love ur efforts, But one question.....Why you always uses that complicated numbers to demostrate ... almost EVERY SINGLE TIME. Using simple numbers, whole numbers to make what you want to teach us----the concept more outstanding and we will not be distracted by that weird numbers. .... FYI

[ultimateinfinite]

God I hate stats

[logimage2]

You just explained in 7 minutes what took my prof 3 50minute classes to explain, thank you very much!

[Scubapops]

Great tutorial! I've been reading a book on statistics, these videos supersedes my book.

[jasonmason29]

She has two nice normal distributed tities. 

[RickyPipez]

Thanks..........



[MountainSleeper]

Thank you so much for this great video! As a college student taking a very difficult statistics course, this is a great supplement to fill in some blanks I missed along the way. Again, thank you very much. So helpful!

[ROLNIKxPL]

your boobs are too distracting, im so failing tomorrows test :P

[Catheranne]

How did you find .0202...I can't figure that out?

[kaizomi]

@Catheranne You need to look up the value in the z-table. Go down to 2, then go across to .05, which shows you .4798. You then need to subtract it from 0.50 (because each side is 50% of probabilities), so 0.50 - 0.4798 = 0.0202.

[uberjuberduber]

This is amazing! Thanks for the help.

[Creolebway]

any vidz on ANOVA. multiple regression. F ratio's , errors etc?

[Creolebway]

your a stats teacher!? booooooooooooobs :)

[spuntaneousent]

how did you get the p-value 0.202???? im lost

[BullGuy87]

good looks but what's more important is that you explain this in a coherent manner.

Thank you.

[Rawshangar]

Love it

[GEORGEBELG]

I do find all of your videos very useful and you are a great teacher. Thanks a lot for that.

In this particular one I spotted a tiny little mistake with the Za values shown at the two-tails. Normally, they should be 1.96 and not 0.0202 (i.e Za/2 and not Za as in the case of one-tail test)

[jiaoyingxi]

Hi, thanks for your radio for us first, butI still have a question for it. What's the difference between the Z value that you wirte on the whiteboard and t value in Teststatistic because i mentioned that the formula for caculating is the same, thus,are they the same things? Hope for your answers. thanks so much.

[jiaoyingxi]

Hi, thanks for your radio for us first, butI still have a question for it. What's the difference between the Z value that you wirte on the whiteboard and t value in Teststatistic because i mentioned that the formula for caculating is the same, thus,are they the same things? Hope for your answers. thanks so much.

[etismyname]

@jiaoyingxi

t-test and z is not calculated together, you use t-test when the sample size is large enough (>30) and also when the population variance is unknown only.

otherwise you could have just used z value instead (I might be wrong through)

[tomyo669]

They chose her to do it for her big thingies. I think the explaination helped a lot though

[UHUO]

Thank you for this video. It was very helpful.

[niallsp]

massive tits on ya

[aTerranWraith]

A very useful video just one question about your conclusion. Since your alternate hypothesis was that U is not equal to 7.4 wouldnt your conclusding setence be "we are 95% certain that the ... is different from 7.4?

[tcreelmuw]

@aTerranWraith The significance level is 1 - the confidence level, which gives us (in this case the 95%)

[reviewermath]

You can ask Questions in Statistics or Math to "reviewermath"

[pulchritudeness]

Thank you so much! Your lecture actually made things so much clearer!

[LordGaara1983]

thank you very much for this

[2415Jan]

any chance you can make a videos on upper and lower tail using proportions?

[sky6533]

excellent video..thanks for posting!



[TheShoalinstyle]

my stupid professor made this so much more difficult! I've been trying to get this for hours and you explained it 5 min. Thank you!!

[ixelerate]

excellent lecture...this very much helped me and the material was presented very clearly, thanks again!

[kalahello]

I think you made a mistake when you calculated 0.0202...0.0202 is the total P value, not 0.0404 because the two tails each have 0.0101. Good lecture though, it helped me ALOT for my midterm.

[acutegrl]

Very helpful! Thank you!

[goodguy74]

Great job! Simple, objective and clear. Thank you

[TubeCactus]

 Sorry, this is not working for me. I find those curves and their point of inflection very very distracting. I couldn't listen to five words in a row. Please wear something more conservative so that the words can get to me. Good work.

[altamashansar]

EXCELLENT !

[djaia]

The video forgot to mention how the p-value was derived in case the statistic is positive. The Z table shows .9798 for positive val 2.05. P-val = 2(1-.9798)=0.0404

[acutegrl]

@djaia Thanks for explaining this part. This was the part that I was missing and kept getting lost on :)

[djaia]

@acutegrl yes that was confusing for me and i had to drill into my brain it's 1 - (value from the z table. I thought others will have an issue w/that as well. Good luck :)

[mlmiles1]

great video.  very helpful.

[iud101]

use a teleprompter

[humza101]

arent you suppose to divide the alpha by 2 because its a two tailed test? need help thanks

[MegaSpeedyGonzalez]

wow, thank u soooo much !!! GREAT JOB!!!

[TrueShadowJS]

thanks! now it actually makes sense :D

[Chattice]

you got nice tits

[MsChoEnglish]

im just going through all your videos and taking notes on each test to cram for aps. thank god i found your channel, it is such help

[karmooooooosh]

Thank u, it is so helpful god bless u

[rachelwong111]

Thanks for this video tutorial! It was definitely helpful to me!

[mistryman112]

Thank you :)

[vinatox]

Thanks very much. As already comment, you are very beautiful!.

[systemaddictshock]

you should make more videos explaining Stat concepts and submit them for review. once stamped approve. send them off to the Online universities for distribution, cuz some of us onliners need a show and tell.

[crazy40906]

you are hot

awake me from my drowsiness of ap stats....

[2121555]

You are so beautiful, I watched the video more than once. I wish you were my teacher. Nice breasts!

[MasterFreespirit]

@2121555 terrible.

[sanger786]

is the number of samples are effective to reject or accept the null hypothesis?

[wlwak]

It's so reassuring to see how someone who clearly knows the mathematics nonetheless has trouble getting her mouth around the jargon.....I have exactly the same problem.

[tcreelmuw]

I felt somewhat like an idiot talking to the camera with no students to listen to me. :)

Plus, my mind always seems to go ahead of my mouth. A hazard of the profession.

[EvansdiAl]

@tcreelmuw you are quite pretty no worries now uve got loads of students :D

[wlwak]

Nice accent. A real southern belle. My my what a treat.

[spand3244]

u r cute.

Keep going!

Interesting subject

[jaci1011]

thanks a lot, I hope to see more of your videos

[fej3a]

How did you obtain .0202 ?

[iloveseattle123]

ah you make stats a little more bearable :)

[mercywater]

excellent, well done!!!!

[bartstanz]

great video. You are a great teacher.

[gkodii]

thank god there are cute ladies with brains like you. MAKE this into video lectures for small subsciptions. I will buy to be in you class on the net

[tcreelmuw]

I didn't think I was being that helpful. But, thanks.

[jamesscottemail]

Hi just thought to thank you. I watched all your lectures. They are wonderful. I understand talking in front of camera with no students present, feels boring. However see more than this lecture has been watch more than six thousand times. A professor would not be able to deliver this many times in his/her entire career. Appreciated for the effort. Hopefully there would be more lectures in future.

[RSKALAGNANAM]

@tcreelmuw - actually, the way a presentation such as yours is useful is when you (or any presenter) makes one or two statements in a way that is different from all other explanations that one reads in various books. Such statements helps the student to expand the thinking in a different direction and things then become very clear. That is exactly what happened to me when I watched this video. Thank you.

[EcraM33]

thanks so much. :). This is way better than reading those long, complicated instructions lol.

[butlerdawgs78]

thank you very much for this vid. I have the most horrible professor who's new this semester and barely speaks or understands english.... nuff' said... THANK YOU!!! :)

[tommygunn8888]

thanks for the refresher. i second the comment earlier that you're cute too. i'd turn up to all your classes.

[tguevara06]

thank god for people like you!

[AUtiger07]

i sit through a class thats an hour and 15 mins long and im lost. i watch this for 6:55 and i understand completely. THANK YOU!!

[tloef]

I just wanted to say thanks for this video. My teacher's not the greatest at explaining but I completely understand it now!

[tweakedmofo]

Thank you... You are a terrific teacher. I think you just helped me pass my midterm :)

[maxwellthedog]

helpful vid, but quite distracting because you are cute

[bhlkassahun]

It's so helpful, It's breifly explained thank you for posting!!! A