R demo | Two-Samples t-Test | Student’s & Welch’s | How to conduct, visualise, interpret & more 😉

Рет қаралды 5,392

2 жыл бұрын

Where can we get more money, working in a factory or in the IT-industry? Two-samples t-test will answer this question. So, let’s learn (1) how to make sure we use a CORRECT test, (2) how to get all these results with one simple command, (3) how to interpret all these results and (4) finally see what happens if we choose a wrong test.
If you only want the code (or want to support me), consider join the channel (join button below any of the videos), because I provide the code upon members requests.
Enjoy! 🥳

Пікірлер: 29

@lizongzhang 9 ай бұрын

Very helpful video! It introduced the most practical and convenient function tools! Your voice is also very magnetic.

@yuzaR-Data-Science 9 ай бұрын

Glad it was helpful! Hope the others are helpful too. Thanks for feedback and for watching!

@fishfish20 Жыл бұрын

The first time I went through the video I was just interested in the R part of it. Today I've learned more from the information shared here in. Thank you for the great video.

@yuzaR-Data-Science Жыл бұрын

Glad it was helpful! :) Feel free to share it with others who might find it useful and thanks for watching!

@fishfish20 Жыл бұрын

@@yuzaR-Data-Science Noted

@madhuprasath6193 4 ай бұрын

Absolutely loved the presentation !

@yuzaR-Data-Science 4 ай бұрын

Glad you enjoyed it! Hope you like the rest too.

@hoangduong2926 8 ай бұрын

This video actually is a hidden gem. Thank you, Sir. I've learnt a lot today.

@yuzaR-Data-Science 8 ай бұрын

So nice of you! Glad it was useful! Hope you like some other of my videos too. Thanks for watching!

@Adelphos0101 Жыл бұрын

I'm loving your videos, all is clearly explained.

@yuzaR-Data-Science Жыл бұрын

Happy to hear that! Thanks for watching!

@joaoalexissantibanezarment4766 Ай бұрын

Excellent video🙌 It would be great a video of bayesian analysis

@yuzaR-Data-Science Ай бұрын

Noted! Thanks for your positive feedback! 🙏

@SUNILYADAV-tv5ze 2 жыл бұрын

A very nice lecture Sir 👍👍.

@yuzaR-Data-Science 2 жыл бұрын

Thanks and welcome!

@SUNILYADAV-tv5ze 2 жыл бұрын

Sir please make videos on Bayesian.

@yuzaR-Data-Science 2 жыл бұрын

I will eventually, but it could take some time. So, please, use other study-resources in the meanwhile and then you'll be able to compare with this channel, when I come up with those. Cheers

@jonrrobinson 2 ай бұрын

Love this! thanks for sharing it. Is it possible to report the Bayesian output based on B10, as opposed to B01?

@yuzaR-Data-Science 2 ай бұрын

Not that I know of. The package doesn't provide any arguments for it, but you could the author of the package on his github page or on twitter. Cheers

@jonrrobinson 2 ай бұрын

@@yuzaR-Data-Sciencemany thanks 👍

@yuzaR-Data-Science 2 ай бұрын

@@jonrrobinson welcome! 🙂

@hassanhijazi4757 6 ай бұрын

Why in this case the pairwise comparison horizontal bar didn’t appear?

@yuzaR-Data-Science 6 ай бұрын

Because those are independent samples. For horizontal bars to appear you need a paired t test, which is a completely different video because it is a completely different test. So, make sure you use a correct test on your data.

@kostasioannidis5463 5 ай бұрын

valuable assistance for violin plots...please provide reference for bias factor table at 5:03

@yuzaR-Data-Science 4 ай бұрын

The original is from the book: "Jeffreys, Harold. The theory of probability. OuP Oxford, 1998.", but you can also see it used in papers like this one: journals.sagepub.com/doi/10.1177/0049124117729712

@viniciusdevertentes Жыл бұрын

Excelent explanation, but, how can I increase the fontsize of the equations in the plot to save it as a figure?

@yuzaR-Data-Science Жыл бұрын

Thanks! I usually use ggsave() and make the plot smaller with width and height arguments. That makes the font larger automatically. Until now nobody complaned about small font ;)

@viniciusdevertentes Жыл бұрын

@@yuzaR-Data-Science thank you so much, sir! I was saving 4 plots of these, tried using first the ggarrange to combine the ggplot objects than using the jpeg function, and I don't know what happened but even using smaller height and width values the fontsize of the equations kept low, now I'll try with ggsave. Thank you so much 😉

@yuzaR-Data-Science Жыл бұрын

oh yeah, there is one bug in saving you have to watch out: "device" argument: ggsave("name.jpg", plot = last_plot(), width = 19, height = 11, device=jpeg) ggarrange actually works fine too! if not, try out "patchwork" package