Independent t-Test [unpaired t-Test]

The independent t-Test (t-Test for two independent samples or unpaired t-Test) is a statistical test that determines whether there is a difference between two unrelated groups.
The independent samples t-Test is used to make a statement about the population based on two independent samples. To make this statement, the mean value of the two samples is compared. If the difference in means is large enough compared to the standard Error of the mean, it is assumed that the two groups differ.
The online statistics calculator:
datatab.net/st...
More information about the independent samples t-test:
datatab.net/tu...
Paired t-test:
datatab.net/tu...
and the Video:
• Paired Samples T-Test ...
One sample t-test:
datatab.net/tu...

[@datatab]

If you like, please find our e-Book here: datatab.net/statistics-book 😎

[@jyotshanajha8316]

i like your videos. its very simple yet detailed. You are life saver, many thanks

[@datatab]

Many thanks : )

[@antoniovpi118]

Hey there! Thanks so much for your videos. They're incredibly insightful and I've learned more from them than in any of my statistics classes at university. By the way, I had a hunch you might be a native German speaker, even though your English is excellent!

[@TemesgenWolde-pw1rh]

Rely this presentation is very very clear so thank you

[@agarwalamit081]

Thanks for the video. Is there a constraint on the sample size? Is it true that we need atleast 30 saples for a normal distribution? Do we need to first check the samples for normality using Shapiro-Wilk test or Kolmogorov-Smirnov test?

[@tj9382]

DATAtab looks cool.

[@tuliomoreira7494]

Amazing video :). Just one question. At 15:23 in the video, should the equation for the degrees of freedom be different in the case of Unequal Variance? Many thanks!

[@datatab]

Sorry for the late reply! No, I do not know that one takes a different formula there! Regards, Hannah

[@neamitervil5523]

Great video. Would a retrospective study comparing two groups( non hispanic Black and non hispanic White) be unpaired/independent?

[@rokhorvat]

yes

[@iqraahmad130]

@@rokhorvat DADDY

[@mazenhany2437]

Awesome video but I have a question about statistical tests , Some time the p-value used is 1- tailed and other 2-tailed

[@datatab]

Hi, many thanks! Please have a look here: datatab.net/tutorial/hypothesis at Directed and undirected hypotheses

[@mazenhany2437]

@@datatab thank you

[@temib9077]

Great lecture as usual

[@datatab]

Glad you enjoyed it

[@abdulkaderkajol6263]

Excellent

[@datatab]

Thanks

[@pholososhamukuni9971]

thank you so much💓💓

[@datatab]

You're welcome 😊

[@johnjunhyukjung]

Thanks!

[@datatab]

Welcome!

[@rokaiamahmoud1640]

Thank you so much ♥♥♥♥

[@innocentgirl6208]

How we know that variance is equal or not

[@datatab]

You can use the levene test for equality of variances

[@applepakistan3164]

Madam when we say the term one tail and two tail test ? Is it same as paired t test or something else 🙏🤲

[@datatab]

Hello, no! paired t test and dependent sample t Test are the same just another name! One tailed and two tailed refers to the hypothesis! Regards Hannah

[@abuda7em20]

@@datatab I think dependent T test based on two factors one is Independent and the other factor is dependent . But , in paired T test we have two groups are related to the same sample but the deference between the two groups in paired T test is usually the time ( before & after ). I happy to get correction if I'm wrong.