AP PSYCHOLOGY

Detailed explanation-1: -In statistics, a sample group can be defined as a subset of a population. The population, or target population, is the total population about which information is required.

Detailed explanation-2: -Population is divided into subgroups, called strata, according to some variable or variables in importance to the study. Variables often used include: age, gender, ethnic origin, SES, diagnosis, geographic region, institution, or type of care.

Detailed explanation-3: -Understanding Samples In simple terms, a population is the total number of observations (i.e., individuals, animals, items, data, etc.) contained in a given group or context. A sample, in other words, is a portion, part, or fraction of the whole group, and acts as a subset of the population.

Detailed explanation-4: -The subset of the population from which data are actually gathered is the sample. A sample should be selected from a population randomly, otherwise it may be prone to bias.

Detailed explanation-5: -Sample-A subgroup of the elements of the population selected for participation in the study. Population is the aggregates of all elements. An element is the object about which or from which the information is desired, for example, the participant.