8.1 Hawkes learning already graded A

8.1 Hawkes learning already graded A Population The particular group of interest in a study sample- a subset of a population Data Information collected for a study Census Collecting data from every member of the population population parameter A numerical description of a particular population characteristic sample statistic Numerical description of a characteristic in a sample Representative sample One that has the same relevant characteristics as the population and does not favor one group over another Random sampling Every member of the population has an equal chance of being selected Stratified sampling Divided into subgroups based on some characteristics. Random sample obtained from each cluster sampling Population is divided into groups that are similar to the population. Whole group is selected Systematic sampling Selecting the nth member of the population Convenience sampling Selecting those that are easy for the researcher to obtain.