• Statistics is the science of data, data is the result/outcome of an experiment (numeric or labels)= the items upon which this information is collected are called experimental units . • Target population: group of items about which the investigator ultimately wants to draw inference. • Sample population: is the group of items from which the sample is actually drawn. (groups could be the same.) • Census Data : measurements are obtained from every unit in the target population. • Sample: a subset of the entire population that is captured in a study. The variable(s) of interest is measured on each item of the sample and statistics are computed based on the “values” of these variables. • SimpleRandomSample(SRS ): a sample of the population where every unit has an equal opportunity to be selected. • Confounding: when the investigator can’t separate the effects of one from the other. •
This is the end of the preview.
access the rest of the document.
Bar chart, investigator, target population, 45.05 sec, 135.5lb