Thank you so much. I am doing statistics for my degree and I was stucked at one hypothesis for week... This video explained what I needed... Awesome!! :)
This is so genius! Thanks for making it easy to comprehend all the different types of t-tests, including the usage of the f-test to check variance. And I like the way you summarise everything at the end, to see the data output by excel and decide if we can accept or reject the null hypothesis. Thanks a lot man! Keep it up!
Hey Joshua, I just discover your channel and you really saved my day!! The videos are really helpful and very well explained. Thank you very much for uploading your videos !!
HI, Based on above video, may i know if my sample size is 132 and 1 dependent with 1 independent and variances are unkbow, so is it need to conduct unknow t-test
Hi, what if I have 293 sample size, the variance is known and the sample means are paired. What test should I use in excel? z-test or t test with paired two means?
Thanks! But im just confused with the mean since we do not reject the Ho & conclude that full time spend < part time. But full time have greater mean than part time so isn't that means that the full time students spend more than part time?
If the p-value is less than alpha, reject Ho. There is a significant difference between the two population variances. If the p-value is greater than alpha, do not reject Ho; there is not enough evidence to conclude that a significant difference exists between the two population variances. Note that the p-value in the output is one-tailed, so you have to multiply it by 2.
Normally don't leave comments on youtube videos but I really have to thank you so much for making this so comprehensive!
Thank you so much. I am doing statistics for my degree and I was stucked at one hypothesis for week... This video explained what I needed... Awesome!! :)
This is so genius! Thanks for making it easy to comprehend all the different types of t-tests, including the usage of the f-test to check variance.
And I like the way you summarise everything at the end, to see the data output by excel and decide if we can accept or reject the null hypothesis.
Thanks a lot man! Keep it up!
Taking a college 3-week Statistics Course and your video helped me earn a 90% on today's exam. Thank you!!
You have no idea how much this has helped me. Thank you!
Hey Joshua,
I just discover your channel and you really saved my day!!
The videos are really helpful and very well explained.
Thank you very much for uploading your videos !!
The best video I have watched on this topic. Thumbs up! The explanations were very straightforward.
you are the teacher of century sir...god bless you
Awesome teaching!! So straight forward, thanks a lot!!!
Thanks man, I was really struggling and you helped a lot!
It's really useful sir. Easy to apply. Specially request u for more videos on other tools.
Thanks for your simplicity!
Thank you so much Joshua. Your teaching is Awesome
Thank you for explaining so well!
Great overview!
Blessing us all since yearssssss.
Bro, Please share the link of series of videos on Statitics in Excel if you have. Its a great video
Great. Good work. Thank you.
HI, Based on above video, may i know if my sample size is 132 and 1 dependent with 1 independent and variances are unkbow, so is it need to conduct unknow t-test
Thank you so much, God bless you!
THANK YOU SO MUCH YOU ARE MY SAVIOUR!!
Thank you so much!!!
This was very helpful! Just one question, why are you using a one-tail T-test and not a two-tail T test?
One-tailed because of the word "more".
Very gm sir. Could you plz help me in how to do hypothesis testing for sample mean= population mean...
Hi, what if I have 293 sample size, the variance is known and the sample means are paired. What test should I use in excel? z-test or t test with paired two means?
We always use t for paired samples.
Thanks! But im just confused with the mean since we do not reject the Ho & conclude that full time spend < part time. But full time have greater mean than part time so isn't that means that the full time students spend more than part time?
Thanks for the video..
I don’t get it all how do you make the conclusion for the f test … to test equality of variances?
Thanks
If the p-value is less than alpha, reject Ho. There is a significant difference between the two population variances. If the p-value is greater than alpha, do not reject Ho; there is not enough evidence to conclude that a significant difference exists between the two population variances.
Note that the p-value in the output is one-tailed, so you have to multiply it by 2.
Hi, if my alpha = 0.05 and my P(F
No. The difference is not significant since your P-value is not less than 0.05.
what if t stat has a negative value?
thank you
It doesn't matter the sign of the t-stat. What matters is whether it falls in the rejection region or not.
❤