STA 2023 Study Guide - Final Guide: Statistical Inference, Data Set, Cluster Sampling
Document Summary
Persons, animals, or objects in our study/ experiment. Is a characteristic or attribute that can assume different data values. The characteristics or property of an experimental or observational unit (subject) measurement. Process we use to assign numbers to variables of individual units (subjects) census. Measure a variable for every unit in population. Subset of the units (subjects) of a population n number of data in sample set. Representative sample exhibits characteristics typical of those possessed by the target population. Four elements of descriptive stats: population or sample, variables that u r investigating, tables graphs numerical summary tools, identification of patterns in data. Five elements of inferential stats: population, variables investigating, sample of population, inference about population based on information about sample, measure of reliability of inference. Selection bias results when a subset of experimental units in the population has little or no chance of being selected for the sample.
