| clustSE | Cluster robust standard errors with degrees of freedom adjustments (for lm and glm objects) |
| crct | Simulated data from 18 schools (from a cluster randomized controlled trial) |
| getV | Get V matrix for merMod objects |
| glance.CR2 | Glance at goodness-of-fit statistics |
| gpadat | Grade point average (GPA) data of students from 25 schools |
| MatSqrtInverse | Compute the inverse square root of a matrix |
| ncvMLM | Testing for nonconstant variance (ncv) |
| robust_mixed | Cluster robust standard errors with degrees of freedom adjustments for lmerMod/lme objects |
| satdf | Compute Satterthwaite degrees of freedom |
| sch25 | Data from 25 schools (based on the NELS dataset) |
| sharedat | Data from Project SHARE |
| tidy.CR2 | Tidy a CR2 object |