Great😂

Hello Sir! Your videos are really helpful. When you will upload the other episodes here?

What if I had two columns of consumer age and another row of the purchase amount, and I wanted to see if there was a correlation between the two, which t-test would I use

Thank you so much Sir! I have an interview in 40 mins. I always gets confused while explaining t-test. best explanation. Thank you!!

Thank you this is so much more clear than the mess my lecturer left me with!!

Thank you from the University of Cape Town!

Working on my data analysis now and I already calculated the mean for 2 groups I want to compare but excel tells me I can't just select the calculated mean. So we can only select a list of values from which it will calculate the mean?

Very helpful video. Thank you for taking the time to post it and make it public.

Does the same explanation apply to a moderated regression analysis ? Let's say we get all coefficients as significant / moderator is dummy coded 1 for women and 0 for men. If we have a significant negative coefficient for the interaction term, we could say there is a decrease in Y as X increases, but this decrease is stronger for the women's group? How can we better explain the interaction effect when reporting results in a journal? The effect of X on Y is stronger in women? Do we report the difference in numbers? Could you provide an example of how to formally report a moderated regression with a dummy variable?

For a now retired but still active biomedical scientist this is the best explanation I've ever seen of main effects and interaction

best video on the subject

Thanks so much

This new series is awesome!! So helpful and easy to follow thanks Dr Grange

Excellent video 🌟❤️

Thanks a million

Thank you so much for this! Just one thing regarding the interaction effect. When I saw a few graphs showing two variables that cross each other while both variables had the same level of gradient, I at first thought there was no interaction effect. Since yes, one variable rises while the other one falls, but both had the same level of gradient. But there is still an interaction effect, as I found out. So I personally find it easier to memorize that there's always an interaction effect as long as the two variables aren't parallel.

You can download the free worksheet to accompany the video here: osf.io/ym84w/. Enjoy!

Thank you... that is useful

Really helpful video! Thanks Dr Grange ✊

fantastic - great help!

Been stuck on this in 2 days, this video cleared everything up. Thank you Jim!

this helped me so much!! thank you

Very well explained i would imagne the math across multiple dimensions might be a bit more complex

The easiest to understand explanation of all the different videos i have looked at. Perfect! Thank you!

why is there no sound?

This is the best explanation I've found to describe a t test. Thank you!

SUPER USEFUL!!!

Just about 5k views on such an amazing content? Sad😢!! Well, Thank you so so much!!

How do i find the r and t value?

Amazingly comprehendible

My lecturer would not stop going on tangents and then pausing only to attempt three more times to explain what these effects are. My test is tomorrow, you are a life saver. Thank you!

How can I order this product?

best explanation on this topic .Thank you.

Thank you very much! Your instruction is straight forward thus understandable, that helps me to solve my problem.

Clear explanation. This helps me a lot! Thank you~~

Thank you so much

This should count as humanitarian service. Thank you sir!

still relevant and very helpful, thank you

Wow great video. Thank You Dear!

I just wanted to say thank you so much. I was struggling with the university tutorials when it came to moving the variables across. They never said to make sure it was in the right order inline with the levels. You made it so simple! Thank you again.

Thank YOU for the VERY clear video!

great vid. thank you

Great explanation. Thank you.

Thank you. I hink you only forgot to mention that if they will eventually INTERSECT on one end of the lines ( which in this case yes they will intersect on the upper left) meaning if we used a different amount of caffeine in the pill or had them skeep deprived less than 1 hour. No intersection = no interaction.

Great tutorial--easy to follow, brief, and still relevant for later version of MS Word.

Nice examples. Thanks.

I got minus, i want it positive, how?

How to say that it's significant at 0.05 level??

Thank you so much Jim. That really made it clear. You have a superb way of explaining things.

Hi sir, like to ask about the problem I have. I have this 5 person having training records from day 1 and day 8 I would like to see what should I use?