If your Stats teacher is asking you to compute things such as:

- Lower & Upper Inner (Outer) Fence
- IQR
- 5 Number Summary

and you have a Tinspire CX CAS then head over to Statistics Made Easy which actually makes Statistics a lot easier: Finding Mean, Median, Mode, Standard Deviation, Variance, Fences, IQR, Statistical Tests, Distributions, Confidence Intervals and a whole lot more …