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IBM SPSS Statistics is a statistical software package. Use this tag for any on-topic question that (a) involves SPSS either as a critical part of the question or expected answer and (b) is not just about how to use SPSS.

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R vs spss: ttest in python with different result after bootstrapping

Running paired t-test after bootstrapping results in very different results when using SPSS versus "ttest_rel" function in python. Why is that and which one is correct? … SPSS code: BOOTSTRAP /SAMPLING METHOD=SIMPLE /VARIABLES INPUT=ap_x ap_y /CRITERIA CILEVEL=95 CITYPE=BCA NSAMPLES=10000 /MISSING USERMISSING=EXCLUDE. …
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1 vote
2 answers
914 views

Friedman's test in SPSS gives different results from R and python

The Friedman test of SPSS gives df=2, chi-square 36.970 whereas below is the output of R and python. … Python and R always behave the same and the only difference is with SPSS. …
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1 vote
2 answers
874 views

Kendall’s Coefficient of Concordance (W) is different when calculate with two formula: SPSS ...

SPSS uses this formula: F (from Friedman test)/n_f (k-1), and I implemented it like and it returns similar value to SPSS: stat/(k*(m-1)) I also used python, however, using the original Kendall’s Coefficient …
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