Research Skills 4 - Lecture 7

Research Skills 4 - Lecture 7

1. Using a non-parametric method

   • If we dont have the exact friequencies but only ranking information
     • Spearmans Rho
   • If we dont have the exact frequencies but only rank information AND ranks are tied
     • Kendall's Tau
   • Discrete Dichotomous data
     • Point biserial correlation

2. Parametric Method

   • Data normally distributed, homogeneity of variances
     • Pearson Correlation

3. Partial Correlation

   • Partial correlation quantifies the relationship between two variables while controlling for the effect of a third variable on both variables in the original correlation