The following tables provide critical values for various values of alpha for the two-tailed Dunnett’s test.
See Dunnett’s Test (Unplanned Comparisons) for details.
Alpha = .01
Alpha = .05
Alpha = .10
Download Table
Click here to download the Excel workbook with the above table.
References
Dunnett, C.W. (1964) New tables for multiple comparisons with a control, Biometrics Vol. 20, No. 3. 482-491
https://www.semanticscholar.org/paper/New-tables-for-multiple-comparisons-with-a-control.-Dunnett/888b68b0713879ced708ad45dc7cfdbe11108b3b
Kanji, G. K. (2006) 100 Statistical tests. 3rd Ed. SAGE
https://methods.sagepub.com/book/100-statistical-tests
Miwa, T. (2015) Dunnett’s tests for comparisons with a control (two-sided: 1%, 5%, 10%)
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who can give me a free logitial wich use dunnett test
What do you mean by “logitial”?
Charle
Dear Dr Charles, good morning,
Alpha = .01 maximum Range dunnett Table k more than 21 or I need (k 89) in table?
Thanks
Hello Hemn,
I don’t know of any tables that handle k = 89.
Charles
thanks
Hi Charles:
Is there a way to get exact p-values for the Dunnett’s (and other unplanned comparisons for non-parametric tests)? I tried changing the alpha level but if I go below 0.01, I get error messages in the t-test table.
Thanks very much,
Keith
Keith,
Currently, I don’t have an algorithm for computing the p-value of the Dunnett’s distribution. I also only have critical values for alpha = .01 to .10.
Real Statistics does provide a much broader range of values for Tukey’s HSD based on the Studentized q range distribution.
Charles
Dr thanks, I’d send the picture, it is that the option of testing does not appear Dunett
GAD
Gerardo,
Sorry, but I don’t understand what the problem is. Please send the picture.
Charles
Dear Dr Charles, good morning, I would like to know why the menu of Dunnet ANOVA test appears not me.
Thank you
GAD
You access the Dunnet’s follow-up to ANOVA, by first choosing ANOVA from the menu. Then choose One factor ANOVA from the dialog box that appears. Dunnett’s test is then one of the options on the following dialog box.
Charles