You need to remember if your data is Parametric or Not (if you forgot Click Here to remind yourself)

Normally Distributed

1. One Dependent Variable and One Independent Variable
   1. Pearson Product Moment
2. One Dependent Variable and two or more Independent Variables
   1. Multiple Regression

Nonparametric Data

1. One Dependent Variable and One Independent Variable
   1. Spearman's Rank Correlation
2. One Dependent Variable and two or more Independent Variables
   1. Sorry Can't Help you with That