CAS PS 101 Lecture 2: January 24

• School: Boston University
• Department: Psychological & Brain Sciences
• Course: CAS PS 101
• Professor: Martha Tompson

Document Summary

When a subject is viewed in its natural habitat without any manipulation: case study. Very up-close, in-depth, and detailed examination of the development of a speci c subject: survey. They have advantages because one could collect large data sets, but they have disadvantages because they could very easily be biased: only those whom it is applicable to may respond to a survey, thus skewing it, correlational. When two variables are measured to access the statistical relationship between them with no extraneous variables: experimental. Strati ed: populations are divided into separate groups. How do you analyze data: descriptive statistics. Brief descriptive coe cients that summarize a given data set: inferential statistics. Test reliability of the ndings of the study and inferring characteristics of subjects. Identi es things using a word: ordinal. Variables have natural, ordered categories, and the distance between them is unknown: interval.