Great video! I'm a foreign language teacher working on a research project. To demonstrate that the strategies I teach in class improve students' language skills, would you recommend using a one-tailed paired t-test to show that post-intervention scores are higher than pre-intervention? How is it done?Can you (please 🙌🏻 )briefly explain? Thanks in advance!
Hello, thank you. In your case you have to use a one tailed test, because your hypothesis is having a direction (higher >) if the p one tail is less than 0.05 then there is a significant difference.
I have used this video in my class for a few semesters now, and this week a student pointed out to me that the hypotheses are not what we talked about in class, and was confused. Just an FYI, null should be less than or equal to, a typo you might want to correct.
Hello Jo Li.. Thank you for your comment. In fact, I'm not sure if I got your point. If you're talking about the null hypothesis, you can write either ways mean equal to mean or difference equal to zero.. The alternative hypothesis could be one of two options : different (≠) where it's two tailed, if I'm just interested to know if there a difference, or one tailed like the case we're having in the video (here greater)..
Hello, Observations that lie more than 2 or 3 standard deviations from the mean are often considered outliers. another method you can use the Interquartile Range (IQR) Method: Calculate IQR = (Q3 - Q1) and define outliers as observations outside the range [Q1 - 1.5*IQR, Q3 + 1.5*IQR].
Thank you so much sir. More power to your channel
socrat_ghadban@yahoo.com
please send me an email, i will forward it to you
Great video! I'm a foreign language teacher working on a research project. To demonstrate that the strategies I teach in class improve students' language skills, would you recommend using a one-tailed paired t-test to show that post-intervention scores are higher than pre-intervention? How is it done?Can you (please 🙌🏻 )briefly explain? Thanks in advance!
Hello, thank you. In your case you have to use a one tailed test, because your hypothesis is having a direction (higher >) if the p one tail is less than 0.05 then there is a significant difference.
Again, thank you so much ☺️! Your video and your explanation have helped me a lot!
This is the purpose :) please share in the future the results of your research@@brenda_pma
Good video. Well explained
Thank you. Glad you liked it!
I have used this video in my class for a few semesters now, and this week a student pointed out to me that the hypotheses are not what we talked about in class, and was confused. Just an FYI, null should be less than or equal to, a typo you might want to correct.
Hello Jo Li.. Thank you for your comment. In fact, I'm not sure if I got your point. If you're talking about the null hypothesis, you can write either ways mean equal to mean or difference equal to zero.. The alternative hypothesis could be one of two options : different (≠) where it's two tailed, if I'm just interested to know if there a difference, or one tailed like the case we're having in the video (here greater)..
should we also include the control group's results for before and after in the test?
yes like this you can confirm the existing relationship
What should i select in output range?
The cell where you want to generate your results
@@syncgalaxy7326 Exactly
if you have multiple measurements for the same patient (Before) and multiple measurments for same patient (After) , does this work with paired t test?
This is exactly what the paired t test is designed for!
Hello, i am doing a experimental research and i also use pre test and post i notice that there might some outliers in our data how can i identify it
Hello, Observations that lie more than 2 or 3 standard deviations from the mean are often considered outliers. another method you can use the Interquartile Range (IQR) Method: Calculate IQR = (Q3 - Q1) and define outliers as observations outside the range [Q1 - 1.5*IQR, Q3 + 1.5*IQR].
Thank you for clarifying my doubts.
My pleasure@@jaysons.1022
Great video doctor 💪
The best on youtube 👍
Glad you liked it! time for application now ;)
How did you make the graph Sir?
I didn't make it, I have as a picture!
Hello. Can I ask a copy of the graph?
Hello, please share your email.
hi how do you make the graph ?
Hello. This graph wasn't made on Excel, if you want to have it just leave your email here
❤💖
hi can i know how you made the graph for the paired t test?
Hello. This graph wasn't made on Excel, if you want to have it just leave your email here
@@SocratGhadban notshouyours@gmail.com , thank you :))
Graph sent! my pleasure!
@@SocratGhadban hello sir.. can I have it too? Looking forward to your response
@@marialuisasanchez157 Hello, i need your email!
I dont know why everytime I put my email address here it was being remove
Do a two-tail sir plss
Check this video, it will help you understanding the difference between once tailed and two tailed test
ruclips.net/video/BrFB91A7Xcg/видео.html
Sir I cant put my email address here I dont know why seems there is a problem. I tried it many times
8.663 is not less 0.05 . P value is 8.663 and it is greater than 0.05
it's 8.663 * 10^-5