turn on suggestions

Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- JMP User Community
- :
- Discussions
- :
- Discussions
- :
- Testing for independence in ANOVA

Topic Options

- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 15, 2014 4:58 AM
(5204 views)

Hi

I am conducting an ANOVA and I am in the process of performing the assumption checks.

I have checked for normality and homogeneity of variance. However, I am not sure about how

to create a scatter plot in order to test for independence of errors.

In my research design respondents have been divided on the basis of what type of coke they

drink (diet or regular), on a colour basis (red or green), and on an information basis (little or much).

They have for instance answered a question about the attractiveness of the product under study

on the basis of a 5-point likert scale. With this information then how do I test for independence of

errors in SAS JMP?

Thanks!

Nikolaj

Solved! Go to Solution.

1 ACCEPTED SOLUTION

Accepted Solutions

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 15, 2014 11:28 AM
(7344 views)

Solution

ANOVA assumptions

1.) Errors normally distributed>Save residuals and run distribution, normal quantile plot and fit normal>goodness of fit

2.) Variance are the same for all groups> Test for equal variances

3.) Errors occur independently>Plot residuals over time

11 REPLIES

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 15, 2014 11:28 AM
(7345 views)

ANOVA assumptions

1.) Errors normally distributed>Save residuals and run distribution, normal quantile plot and fit normal>goodness of fit

2.) Variance are the same for all groups> Test for equal variances

3.) Errors occur independently>Plot residuals over time

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 16, 2014 5:06 AM
(4436 views)

Thanks. So for the test of independence in errors i simply make a column from 1 to how many?

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 16, 2014 6:25 AM
(4436 views)

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 16, 2014 7:32 AM
(4436 views)

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 16, 2014 8:26 AM
(4436 views)

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Jan 16, 2014 8:39 AM
(4436 views)

Since I am not exactly clear on your specific problem I would suggest some good references that can easily found by searching google by entering

**Testing for Independence of Errors in ANOVA in JMP**

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Aug 19, 2015 2:43 PM
(4436 views)

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Aug 20, 2015 6:56 AM
(4436 views)

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

Aug 21, 2015 3:15 PM
(4436 views)