STA-1013 Lecture Notes - Lecture 1: Treatment And Control Groups, Meta-Analysis, Dependent And Independent Variables
Document Summary
Population- complete set of people or things being studies. Sample statistics- numbers describing characteristics of the sample found by consolidating or summarizing the raw data. Margin of error- describes the range of values, or confidence interval, likely to contain the population parameter. Confidence interval: from (sample statistic - margin of error) to (sample statistic + margin of error) The bigger the sample, the lower the margin of error. Census- the collection of data from every member of a population. Representative sample- a sample in which the relevant characteristics of the sample members are generally the same as the characteristics of the population. Bias- design or conduct tends to favor certain results. Experimental studies- researchers apply some treatment & observe its effects on the subjects of the experiment: treatment group- receives treatment, control group- doesn"t receive treatment, only controls factor of interest. Variable of interest- the items or quantities that the study seeks to measure.
