Pearson Product-Moment Correlation

http://statistics.laerd.com/statistical-guides/pearson-correlation-coefficient-statistical-guide.php

Spearman’s Rank-Order Correlation

http://statistics.laerd.com/statistical-guides/spearmans-rank-order-correlation-statistical-guide.php

Linear Regression Analysis using SPSS

http://statistics.laerd.com/spss-tutorials/linear-regression-using-spss-statistics.php

Power and effect size

http://www.linguistics.ucla.edu/faciliti/facilities/statistics/power.htm

Written by Shengdong Zhao

Shen is an Associate Professor in the Computer Science Department, National University of Singapore (NUS). He is the founding director of the NUS-HCI Lab, specializing in research and innovation in the area of human computer interaction.