Bradley Pan-Weisz
Bradley Pan-Weisz
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Using Regression to Test the Orthogonal Fractional Contrast Codes from Scenario 2 in jamovi (Part 7)
Using Regression to Test the Orthogonal Fractional Contrast Codes from Scenario 2 in jamovi (Part 7)
In this video I demonstrate how to run regression models in jamovi using the orthogonal fractional contrast codes we specified for Scenario #2 (see Parts 3 and 5 of this series). Specifically, I demonstrate how to determine that the analysis we run statistically equivalent to the one-way between-subjects ANOVA we ran in Part 1 of this series, how to interpret the jamovi output, and how to confirm that our contrast codes are orthogonal.
You can download jamovi here: www.jamovi.org/download.html
You can download all of the materials I use in this series of videos here: drive.google.com/drive/folders/1cDwVudmRtgBuVJx-N5L1gS_hg3wjKTHu?usp=sharing
Below are links to each part of this video series.
Part 1: ua-cam.com/video/2oI2f7WzIqU/v-deo.html
Part 2: ua-cam.com/video/oQLdrsrwdX8/v-deo.html
Part 3: ua-cam.com/video/79sWKzwSxI0/v-deo.html
Part 4: ua-cam.com/video/Gs7DNR2VPZU/v-deo.html
Part 5: ua-cam.com/video/c2efyziFjII/v-deo.html
Part 6: ua-cam.com/video/N7cFHHIh4E4/v-deo.html
Part 7: ua-cam.com/video/vHEaxB3NkYA/v-deo.html
Переглядів: 179

Відео

Using Regression to Test the Orthogonal Fractional Contrast Codes from Scenario 1 in jamovi (Part 6)
Переглядів 1983 роки тому
Using Regression to Test the Orthogonal Fractional Contrast Codes from Scenario #1 in jamovi (Part 6) In this video I demonstrate how to run regression models in jamovi using the orthogonal fractional contrast codes we specified for Scenario #1 (see Parts 2 and 4 of this series). Specifically, I demonstrate how to determine that the analysis we run statistically equivalent to the one-way betwee...
Creating the Orthogonal Fractional Contrast Codes from Scenario #2 in jamovi (Part 5)
Переглядів 2513 роки тому
Creating the Orthogonal Fractional Contrast Codes from Scenario #2 in jamovi (Part 5) In this video I demonstrate how to create the orthogonal fractional contrast codes we specified for Scenario #2 (see Part 3 of this series) in jamovi. In a subsequent videos in this series I demonstrate how to run regression models in jamovi using these contrast codes. You can download jamovi here: www.jamovi....
Creating the Orthogonal Fractional Contrast Codes from Scenario #1 in jamovi (Part 4)
Переглядів 5803 роки тому
Creating the Orthogonal Fractional Contrast Codes from Scenario #1 in jamovi (Part 4) In this video I demonstrate how to create the orthogonal fractional contrast codes we specified for Scenario #1 (see Part 2 of this series) in jamovi. In a subsequent videos in this series I demonstrate how to run regression models in jamovi using these contrast codes. You can download jamovi here: www.jamovi....
Creating a Set of Orthogonal Fractional Contrast Codes for Scenario #2 (Part 3)
Переглядів 1683 роки тому
Creating a Set of Orthogonal Fractional Contrast Codes for Scenario #2 (Part 3) In this video I demonstrate how to create a set of orthogonal fractional contrast codes when having four groups, while testing a specific research hypothesis (same groups, but a different hypothesis than Scenario #1). As I did in Part 2, I discuss how to determine the number of contrast codes you'll need in order to...
Creating a Set of Orthogonal Fractional Contrast Codes for Scenario #1 (Part 2)
Переглядів 3163 роки тому
Creating a Set of Orthogonal Fractional Contrast Codes for Scenario #1 (Part 2) In this video I demonstrate how to create a set of orthogonal fractional contrast codes when having four groups, while testing a specific research hypothesis. Specifically, I discuss how to determine the number of contrast codes you'll need in order to create a full set of contrast codes, how to ensure that your con...
Introducing Creating and Using Orthogonal Fractional Contrast Codes (Part 1)
Переглядів 4643 роки тому
Introducing Creating and Using Orthogonal Fractional Contrast Codes (Part 1) In this video I introduce a basic research context that includes a continuous dependent variable and a four-level categorical variables. I demonstrate how to run a one-way between-subjects ANOVA in jamovi to test for mean differences between the four groups on the dependent variable, and then highlight some of the limi...
Testing Simple Models in jamovi
Переглядів 5493 роки тому
In this video I demonstrate how to test simple models in jamovi using a regression-based approach to data analysis. Simple models have an intercept, but no predictors. With simple models, the intercept is the mean of the outcome variable. You can then test whether this intercept (i.e., the mean of the outcome variable) is significantly different from any value. By default, statistics packages t...
How to Create a Mean Composite Variable in jamovi
Переглядів 3,7 тис.3 роки тому
In this video I demonstrate how to create a mean composite variable in jamovi. How to Create Reverse-Scored Variables in jamovi: ua-cam.com/video/KdAwrySrWFk/v-deo.html&ab_channel=BradleyPan-Weisz
How to Create Reverse-Scored Variables in jamovi
Переглядів 6 тис.3 роки тому
In this video I demonstrate how to reverse score variables in jamovi. Specifically, I demonstrate three different techniques for reverse scoring variables, depending on the response scale of the variable: 1 to 5, 0 to 4, and -2 to 2. Each of these response scales have 5 response options, but they require slightly different techniques for reverse scoring. I demonstrate how to use these technique...
How to Create Mean-Centered Variables in jamovi
Переглядів 1,9 тис.3 роки тому
In this video I demonstrate how to mean center variables in jamovi. Specifically, I demonstrate two different ways to mean center. The first way is a two step process: 1) Find the mean of the variable, 2) Use the mean to create the mean-centered variable. The second way is more elegant. It takes advantage of the VMEAN function within jamovi, which allows you to bypass having to first find the m...
How to Create Reverse-Scored Items and Mean-Composite Variables in JASP
Переглядів 5 тис.4 роки тому
In this video I demonstrate how to reverse score items, and create mean composite variables, in JASP. Dataset is available here: drive.google.com/file/d/1edUVUs4-fdB-Ptq0JTYLDNKc0ugyE95r/view?usp=sharing You can download JASP for free here: jasp-stats.org/
How to Create a Contrast-Coded Variable in jamovi
Переглядів 1,8 тис.4 роки тому
In this video I demonstrate how to create a two-level contrast-coded variable in jamovi. Specifically, I demonstrate how to create a two-level, fractional contrast code in two different ways using the Compute Variable 'IF' function in jamovi. First, I show you how to create the variable from a string source variable, and then I show you how to create the variable from a numeric source variable.
How to Create Dummy Codes in jamovi
Переглядів 8 тис.4 роки тому
In this video I demonstrate how to create dummy codes in jamovi. Specifically, I show how to use the Compute Variable 'IF' function to create a dummy-coded variable from a string source variable.

КОМЕНТАРІ

  • @duyguispirogullar495
    @duyguispirogullar495 5 місяців тому

    you saved me thank you so much

  • @amrifaizalm
    @amrifaizalm 7 місяців тому

    thank you!

  • @joyamakaa
    @joyamakaa 8 місяців тому

    if anyone has missing values make sure to put ",ignore_missing=1" after your last variable!

  • @IbertC
    @IbertC 8 місяців тому

    Thanks for the explanations !

  • @luke_MacLaughlin
    @luke_MacLaughlin 9 місяців тому

    Thanks Brad!

  • @sophiesmith3560
    @sophiesmith3560 Рік тому

    thank you king

  • @FinallyUnderstand
    @FinallyUnderstand Рік тому

    Thank you!!!!

  • @marcelinegh
    @marcelinegh Рік тому

    Here you have two options, course, no course. I have like 5, so how do I code it?

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 Рік тому

      If you'd like to create a 2-group dummy code for the 5 groups, you can follow the same steps in this video. However, with 5 groups, it's better to create contrast codes. I have a series of videos explaining how to do this. Here is a link to the first video in my series: ua-cam.com/video/2oI2f7WzIqU/v-deo.html&ab_channel=BradleyPan-Weisz

    • @michaellat1316
      @michaellat1316 Рік тому

      Did you figure this out? How to make dummy codes with more than 2 options ?

    • @4nn13l1n4
      @4nn13l1n4 Рік тому

      @@bradleypan-weisz2105 on which video you are showing that? I should also make dummy code for Likert so it's 5

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 Рік тому

      To be clear, you should make dummy codes when you are comparing 2 groups (your independent variable or predictor), not based on how many options you have on your response scale (dependent or outcome variable).

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 Рік тому

      I provided the link to the playlist for creating codes for more than 2 group (called contrast codes, not dummy codes) in an earlier comment. ua-cam.com/play/PLz1uNv99Tm6rSg4JGl8Mf6jOXzvGrdpdt.html

  • @lo5378
    @lo5378 Рік тому

    It would have been useful if you'd set up the example as having multiple categories for your categorical variable.

  • @raphaeldelacroix1239
    @raphaeldelacroix1239 2 роки тому

    Thanks for this video! Little question though: is it possible to change the equaling sign for a “contains”? In my example, I have a list of names, for example Lockhart, Miss Sally. In my variable I want to display whether the person is a man or a woman, so if the name contains miss I’d like it to display 1. Is that a thing?

  • @luccapereirarodrigues685
    @luccapereirarodrigues685 2 роки тому

    thank yoou!!

  • @kacperurbanczak3407
    @kacperurbanczak3407 2 роки тому

    Thanks for your work, it is so transparent! Do you actually consider the Likert scale as continuous or is it just for the sake of computation?

  • @NoahDrill
    @NoahDrill 2 роки тому

    Super helpful and clear - thanks for this video!!!

  • @helenfoale3016
    @helenfoale3016 3 роки тому

    Thank you - very helpful!

  • @jufromy6773
    @jufromy6773 3 роки тому

    I did reversed score variables in Jamovi, but I want to undo the reverse. How do I do this?

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 3 роки тому

      Because you create a new variable for the reverse scoring, you can just NOT use the newly created variable -- no need to undo anything. You can just use the original variable. Does that make sense?

  • @perpalmgren2820
    @perpalmgren2820 3 роки тому

    Great! I really enjoyed you reverse scoring method in JASP🤩😜. Do you have a suggestion if reversing a 0-4 scale, thus not a 1-5 scale? Grateful for help.

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 3 роки тому

      Hi there! I made a video for reverse-scoring these kinds of variables with jamovi (not JASP). With that said, I believe the logic will transfer easily to JASP. Here is the video: ua-cam.com/video/KdAwrySrWFk/v-deo.html&ab_channel=BradleyPan-Weisz

  • @lspai8367
    @lspai8367 3 роки тому

    Hi!, great examples. It would be great to see the approach for a Two Way Anova with replications. Thanks for de video.

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 3 роки тому

      Thank you for the suggestion. I will consider that for a future video. The process is almost identical to this one, but there are a few key differences. Have a nice day!

  • @icuigloo
    @icuigloo 3 роки тому

    thank you so much :-)

  • @clancyandruby
    @clancyandruby 3 роки тому

    Brilliant! Thank you so much :D

  • @peterloberg6076
    @peterloberg6076 3 роки тому

    Hello ! How should i reverse a score ranging from 1-4 ?

    • @bradleypan-weisz2105
      @bradleypan-weisz2105 3 роки тому

      Because your response options do not contain negative numbers or a zero, I would recommend taking your highest response option and adding 1 (4+1 = 5), and subtracting responses on your original variable from 5. So, in your situation, 1 would become a 4 (5-1 =4), 2 would become a 3 (5-2 =3), a 3 would become a 2 (5-3 =2), 4 would become 1 (5-4 =1). I hope this helps!

  • @Zipgagosibda
    @Zipgagosibda 4 роки тому

    Thank you for this video