All Questions
Tagged with friedman-test spss
6
questions
1
vote
0
answers
26
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Every time I run a statistical test, my n-value is doubled
I just finished collecting data for a small study with a within-subject design looking at caching behaviour and how it can be affected by a bird's surroundings. My study had three experimental ...
- 21
1
vote
2
answers
875
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Friedman's test in SPSS gives different results from R and python
I have a repeated measurement of n=452 participants. The Friedman test of SPSS gives df=2, chi-square 36.970 whereas below is the output of R and python. I cannot explain this difference for chi-...
- 51
1
vote
2
answers
857
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Kendall’s Coefficient of Concordance (W) is different when calculate with two formula: SPSS VS python
I used the Friedman test to compare three repeated measures and I use Kendall’s Coefficient of Concordance (W) to get its effect size.
SPSS uses this formula: F (from Friedman test)/n_f (k-1), and I ...
- 51
10
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4
answers
20k
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Friedman's test is very significant, but its post hoc comparisons (SPSS) are not significant
I ran a non-parametric Friedman's test for my data in SPSS 22 and significantly rejected the null. That would mean that among the $k$ paired samples (3 in my case), there should be detected at least ...
- 277
3
votes
0
answers
58
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Test analysis - repeated measures
I lack the experience and can't find an answer anywhere at the moment.
The situation is as follows:
I would like to test a new device measuring the heart rate of a patient. For this, I have observed ...
- 51
0
votes
0
answers
646
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Significant Friedman's test vs. non-significant multiple comparisons
I am currently running a randomized, placebo-controlled, cross-over design for a new type of intervention. This intervention is compared to a placebo and another more conventional type of treatment. ...
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