YSBAT    Accuracy Assessment I: Sampling Scheme

- Illustrate random and stratified random spatial sampling schemes

- Define and contrast area-weighted, proportional and per-category sampling schemes

- Define and identify the main factor determining the sample size an the area-weighted scheme

- Explain why this scheme can be used to estimate overall, but not categorical accuracy

- Define, and identify the main factors determining sample size under a proportional per-category scheme

- Define and identify the main factors determining the sample size under an equalized category scheme

- Explain why the proportional and equalized per-category schemes can be used to estimate categorical, but not overall accuracy