SPSS

SPSS

1. descriptive statistics

   • qualitative
     • graphical
       • Bar graph, Pi chart : graphs >graph type>of cases>define slices by>ok>element>show data labels>options>title>hide ligand.
     • numerical
       • frequency table: analyze >descriptive statistics> frequencies> choose variable>ok
   • quantitative
     • graphical
       • histogram , frequency curve, frequency polygon , scatter diagram, box and whisker : graphs> choose graph> summaries of separate variables > ok
     • numerical
       • mean, median ,mode, CV ,variance, SD, SE, CI, Kurtosis, ...: analyze >explore>statistics

2. inferential statistics

   • qualitative & quantitative
     • one mean : analyze > compare means > one mean sample test > test value > ok
     • two means
       • paired
         • t test ( normal) : analyze compare means > pared samples t test > ok
         • Wilcoxon ( not normal) : analyze > non parametric tests > legacy dialogs > 2 related samples > ok
       • independent
         • t test (normal) : analyze > compare means > independent samples t test > test variables > grouping variables > define groups > ok
         • mann whitney u test ( not normal) : analyze > non parametric test > legacy dialogs > 2 independent samples >> mann whitney u test > ok
     • three means
       • Anova : analyze > compare means > one way anova > ok ,for post hoc > LSD > ok
       • KWT : analyze > non parametric test > legacy dialogs > K independent samples > ok
   • qualitative & qualitative
     • analyze > descriptive statistics > cross tabs > statistics ( Chi square) > cells (row) > ok
       • pearson chi square >>validity
       • chi square for trend >>linear association
       • fisher exact test >> no validity
   • quantitative & quantitative
     • scatter diagram
       • checking correlation : analyze > correlate > bivariate > pearson(normal) or spearman(not normal) > ok
       • checking regression : analyze > regression > linear > statistics > CI >ok