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cavanliew
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Добавлен 13 май 2009
Видео
Correlation & Regression SMH Application Review
Просмотров 114Год назад
Correlation & Regression SMH Application Review
JASP Application Review Correlation & Regression
Просмотров 134Год назад
JASP Application Review Correlation & Regression
Getting X Value from Critical Boundary in Excel
Просмотров 15Год назад
Getting X Value from Critical Boundary in Excel
One sample z test using Standardize in Excel
Просмотров 51Год назад
One sample z test using Standardize in Excel
Transforming Distributions to New M, SD
Просмотров 41Год назад
Transforming Distributions to New M, SD
Solving for an Unknown with Mean and Sample Size
Просмотров 53Год назад
Solving for an Unknown with Mean and Sample Size
Making Overlaid Frequency Polygons in Excel
Просмотров 252Год назад
Making Overlaid Frequency Polygons in Excel
z scores, standardization, iles in JASP
Просмотров 592Год назад
z scores, standardization, iles in JASP
MoCT, MoV, Split File, Interval Plots, and Boxplots in JASP
Просмотров 317Год назад
MoCT, MoV, Split File, Interval Plots, and Boxplots in JASP
🎯 Key Takeaways for quick navigation: Hypothesis testing for correlational design involves identifying alternate and null hypotheses. Non-directional tests are more conservative in statistics. Null hypothesis states the absence of a relationship between variables. Pearson's correlation value shows the relationship, but p-value determines statistical significance. In hypothesis testing, a p-value less than or equal to 0.05 indicates statistical significance. A p-value of 0.02 suggests a statistically significant relationship between stress and physical symptoms. Made with HARPA AI
AI...a great example of the usefulness of statistical models
🎯 Key Takeaways for quick navigation: Hypothesis testing for correlational design involves identifying alternate and null hypotheses. Non-directional tests are typically used and are more conservative in statistics. The null hypothesis states there is no relationship between variables being tested. Descriptive statistics summarize the data before performing a correlation test. Using regression in Excel can provide a correlation value and test of significance. A p-value of less than or equal to 0.05 indicates statistical significance. A statistically significant result means rejecting the null hypothesis. In the example given, there was a statistically significant relationship between stress and physical symptoms. Made with HARPA AI
thankyou
can I know how to edit the bin number to number like "xx - xx"?
You would do that simply by putting the "xx - xx" (which I assume refers to the lower class and upper class limit, respectively) in the Label area. The Value entry does not permit multiple values. I hope that helps!
@@cavanliew Thank you so much for your prompt response! it helped!! thanks!!!!!
Thank yo very much!
Z-scores are right towards the end at 1:15
Thank you for the clear explanations!
Thank you!
Thank you!
Thank you so much for this clear explanation, in my results, Regression stat Multiple R +0.470211196, while the correl = - 0.47021196, what is this mean or is it OK?
Without going into the details of why, multiple R is always positive. The sign of the correlation is what will tell you the direction of the relationship accurately. You will also note that the sign of the slope in the regression table will match the sign of the correlation coefficient.
Thank you!
This was so super easy I love it ❤
Thank you you made it so easy to understand
See 5:40 in the video
If you wanted the two tailed p value, multiply the one-tailed p-value the z test returns by 2. That is the two tailed p-value value that could be compared to an alpha value for a two-tailed test.
if you need the two tailed test p level, do you use that p level when you calculate the z statistic? or do you keep using the one tailed p value
Do you do any tutoring?
Gracias, amigo.
Thank you!
Thank you for your help. I was so confused. My professor did a video about introducing JASP, but totally skipped this part.
Thank you so much
Thank u this video helped me a lot🥹🙏🏻
Easy Explanation. Thanks
thank u very much
Thank you so much for the explanation in detail!
Thank you so much for the explanation
very helpful, Thank you!
Thanks!
Hi what about if I have a df= 137? Is there a formula for that?
Technically, yes. However, there are many free resources online (as well as statistical programs) that will find these values for you rather than using the distributional formula "by hand". For example, graphpad.com/quickcalcs has an "r to p" calculator. You can find others by doing a quick web search. My channel also has videos with such examples. I hope that helps.
Hi Sir, i need your help. From below info, what you understand. Can you explain to me, pls? Hypothesis i) There is a positive relationship between salary and employee retention - BETA VALUE (-0.379), Pearson Correlation (-0.289) Result : Accepted ii) There is a positive relationship between communication and employee retention - BETA Value (-0.159), Pearson Correlation (0.110), Result (Accepted) iii) There is a positive relationship between job satisfaction and employee retention which impact their decision to stay : BETA Value (-0.115), Pearson Correlation (-0.136), Result (Rejected)
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i love yoy
If I get the Skegness and kurtosis values how do I know if the data is normally distributed and if not which direction it skews in. Thank you :)
Perfectly normal would have 0 skewness and kurtosis. A rule of thumb that is sometimes suggested for "fairly" normal is within plus or minus 3. Positive values of skewness indicate a positive skew (tail to right) and negative means negative (tail to left).
@@cavanliew Thank you so much!
Example for formula sir
Thank you so much !
Is n't the alternate hypothesis quite the opposite that there is no significant relation between 2 variables , thats why the name is alternate
No, the alternate hypothesis cannot contain a statement of equality in classical, frequentist hypothesis testing. Saying "no relationship" is the null (null means "none" basically), and it contains the statement of equality (such as r = 0) in the context of the correlation between two variables. The alternate is that there is a relationship of some kind.
This gets crazy so quickly 😭😭
Thank you 😊
Can I use the same method for Likert Scale Data?
You can, but Likert scale data is technically ordinal which is not perfectly in line with the assumptions of Pearson's correlation. As such, a more "technically correct" approach would be to use Spearman's rho for testing correlation in this case -- shown here: ruclips.net/video/K2QMKnA3jXQ/видео.html. That said, the two methods will generally yield similar results and, in practice, it is rather common to treat Likert scale data "as if" it were interval-ratio data in many disciplines that use applied statistics.
Man I need help for my dissertation could you give me a few hints? I’d pay you honestly
Last how did u decided its null or alternative??
In classical hypothesis testing using "frequentist" approaches, the "null" is the assumption we make to start. The "null" is generally going to be a statement of "no effect" -- null means "having or associated with the value zero". Unless there is some context given that makes it clear that the null hypothesis should be a value other than 0 based on some knowledge regarding the assumptions being made about the population, the assumption in correlation (or regression) is that the null hypothesis expects there to be "no relationship" (i.e., the correlation [or slope] coefficient is 0). The "alternative" (or research) hypothesis is the one that expects a relationship. Given the correlation coefficient is the numeric representation of the "relationship" between the two variables, the alternative would therefore mean that mathematically the correlation coefficient does not equal 0 (as a non-directional hypothesis example). If you have a reason to expect a particular type of relationship (positive or negative), you might be more specific and say that the correlation coefficient is "greater than" or "less than" zero, but this would only be if you are making a directional hypothesis. (The default in most "real-world" applications is to use non-directional hypotheses, but some classes or books will have you practice with directional ones, too.)
what if the p value is up to 0.08****, what do we accept and reject then??
If the p value is 0.08 and you set alpha at 0.05 (or are using this as the "conventional" alpha), you would retain the null hypothesis because 0.08 > 0.05 (i.e., p > alpha). Your obtained p value must be less than or equal to alpha to reject the null hypothesis.
@@cavanliew thank you so much for the quick reply. You really really helped me for my last minute study for stats exam that's in a couple of hours
Hello sir, what if there’s 3 indpendent variable i want to correlate it with the dependent variable? How sir? Or should i do it one by one?
You can do it one by one if what you want to know is the "bivariate correlation" of each independent variable with the dependent variable. If you want to know how all three variables relate to the outcome "controlling for the others," you would want to use a multiple independent variable approach. The simplest way to do this in Excel is to use regression and select the multiple independent variables all at once. Which approach to use (3 bivariate correlations or 1 multiple regression) depends mostly on your question. For example, if you want to know whether one variable "adds" to your ability to predict the dependent variable above and beyond the others, you would want to use a multiple regression. If you just want to know whether each variable is related to the dependent variable in its own, you would use several bivariate correlations. Hope that helps!
@@charlesvanliew9927 thank you so much sir for your response and great answer! It helps me a lot 😊
What did you insert to the data analysis? The X or Y? Or both?, Nah, I got it
For correlation, you select both X and Y (there is only one input box). Excel will expect that one column contains X and one contains Y. When you do regression, you have to select X and then select Y (and there are input boxes that identify which one to put where ("Y Input Range" and "X Input Range").
@@cavanliew thank you
Hi. Do you know how you to filter a subset of a scale variable? For example, if I wanted to select certain ID numbers (e.g., 278, 1 345, 65, 43)
May I ask why regression?
Thank u so much sir
So am I missing something or is it not possible to customize the graph's X axis or the number of bins generated?
THIS IS EXACTLY WHAT I NEEDED THANK YOU SO MUCH
Tq sir..may god bless u :)