Stratified Sampling Why is stratified sampling more accurate when there are skewed populations
{"Image DocumentName": "Stratified SamplingWhy is stratified sampling more accurate when there are skewed populations?", "Image ImageDescription": "The less variance in a group, the less sample size it takes to produce a precise answer. Why? If 99% of the population (low variance) agreed on the choice of Brand A, it would be easy to make a precise estimate that the population preferred Brand A even with a small sample size. Ch 12.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}