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K-S TEST (KOLMOGOROV-SMIRNOV NORMALITY TEST)

  • 1.  K-S TEST (KOLMOGOROV-SMIRNOV NORMALITY TEST)

    Posted Fri May 14, 2021 07:53 PM

    Hello everyone!

    I have trouble conducting a K-S Test between two sub-groups of the same group (column) as i need to compare them. Do i create 2 different columns of each sub group and then conduct the test or sth else?

    Please help!






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  • 2.  RE: K-S TEST (KOLMOGOROV-SMIRNOV NORMALITY TEST)

    Posted Fri May 14, 2021 08:26 PM

    You can get a K-S or Shapiro-Wilk normality test with one group variable (column) and one measure variable via Analyze > Descriptive Statistics > Explore. Use the Plots subdialog or syntax like this

    EXAMINE VARIABLES=educ BY minority

    /PLOT NPPLOT

    /COMPARE GROUPS.

    You might also be interested in the two-group Q-Q plot (Analyze > Descriptive Statistics > Two Variable or Group Q-Q Plot) or in syntax

    SPSSINC QQPLOT2 VARIABLES=salary BY=minority.

    It does not provide test statistics, but the Q-Q plot gives a more complete description of the differences.

    SPSSINC QQPLOT is an extension command that can be installed via the Extensions > Extension Hub menu. It requires the appropriate version of R and the R Configuration file. The latter can be installed from the Extension Hub.






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