Now please fill your homework to a blank A4 paper. Do notforget to write
1- What is a correlation in statistics?
2- What is the purpose of correlation?
3- What are differences between Spearman and Pearsoncorrelation?
4- Why pearson and Spearmen correlation can differ?
5- What do you mean by rank correlation?
6a- What are the assumptions of pearson’s correlationcoefficient itself?
6b- What are the assumptions of statistical significance-testfor correlations?
(see the file PSY214-03.ppt)
7- What is homoscedasticity assumption? Please explain with asimple drawing.
8- Please check correlations between (I_V and D_V1, I_V andD_V2, D_V1 and D_V2) and report in APA style.
9- With your results (by cleaning outliers and not cleaning)explain the effect of outliers on Pearson, Spearman and Kendal'scoefficients.
10-Please write SPSS commands and option selections forcorrelation analysis.
If you have problem with data cleaning please use the datasets in drive noted “outliers cleaned”
