STAT151 Lecture Notes - Bar Chart, Simple Linear Regression, Data Set

• School: University of Alberta
• Department: Statistics
• Course: STAT151
• Professor: Paul Cartledge

Document Summary

Stat 151 lecture notes (september 6, 2013) Statistics: numerical facts, a field of discipline. Population consists of all elements who have characteristics that are being studied. Sample a portion of the population selected for a study (ex. Parameter summary measure calculated for population data. Statistic summary measure calculated for sample data ( , y, x) always given. Variable a characteristic that is recorded for the purpose of a study. Qualitative (aka categorical) something that cannot assume a numerical value. But can be sorted into 2 or more categories. Two types: discrete: only certain numerical values are available and not intermediate values (ex. # of days each month: continuous: includes any numerical value over a certain interval or intervals (ex. Sample goes with statistic (they start with the same letters) Descriptive method to view a given dataset. Inferential method that uses sample results to infer a predicted conclusion about a larger population. Frequency the number counted for a certain variable.