PSYB07H3 Lecture 2: Lecture 2
Document Summary
Entire collection of events in which you are interested. Can be calculated for a population or a sample. Asking what is the average age of this class. Estimating population parameters using sample statistics take the statistics and draw conclusions to apply for the entire population. Random sampling the degree to which the sample reflects the population. Every member in the population has an equal chance of being selected. Internal validity the degree to which an experiment measures what it is supposed to. Assignment to groups such that every member of the sample has an equal chance of being selected for each group. A property of an event that can take on different values. Nominal vs. ordinal vs. interval vs. ratio. Variable that can take on a limited number of values. Variable that can take any value within a scale. Variable that can take on many different values. Converting measurement data to categorical data frequency how often.
