STA220H5 Lecture Notes - Lecture 1: Design Of Experiments, Descriptive Statistics
Document Summary
Quantitative data: numbers that occur in a natural and obvious way. Qualitative data: not natural numbers and are usually categories. Population set of units that we are interested in studying. Experimental unit: an object that we are interested in, a characteristic or a property of a population unit. It involves collecting, summarizing, organizing, analyzing, and interpreting data. shows characteristics typical of the target population. Random sample: one where every unit of the population has an equal chance of being selected. Descriptive statistics: uses graphs and numbers to find patterns and to summarize and present information contained in a data set. Inferential statistics: uses sample data to make generalizations about a larger set of data which is unavailable or unknown to us, a generalization about the population based on the information in a. Measure of reliability statement about the degree of uncertainty of the inference. In observational studies the researcher observes the units and records the information.
