MATH 170 Lecture Notes - Edda, Systematic Sampling, Unified Atomic Mass Unit
Document Summary
I inn (cid:12200) ssaammppilee ssiizzee - r r r - _ Of being chosen (ex . random number generator ) No matter what data collection method is used it is important that the sample is representative. Representative sample - a sample that exhibits characteristics typical. Of those possessed by the target population the easiest way to get a representative sample is a simple random sample. Simple random sample (srs) - every sample selected. Nonresponse bias - when not all data is obtained. Mean __ average -_ nrii int[ i + i + i + 3 +3 + 7. Sample mean = / ( / bar )
