BSB123 Study Guide - Final Guide: Binomial Distribution, A Priori And A Posteriori, Weighted Arithmetic Mean
Document Summary
Inferential: use sample to draw conclusions about the population. Parameter: numerical measure that describes a characteristic of a population. Statistic: numerical measure that describes a characteristic of a sample. Important sources: data distributed by organisation or individual, designed experiment, survey, observational study. Discrete (finite e. g 1,2,3) or continuous (infinite 1. 2713 ) Time series (time element) or cross sectional (one point in time) Interval (no ratio proportions) or ratio (ration comparisons) Lecture 2: presenting data in tables and charts & introduction to descriptive measures. Frequency distribution: summary table in which data is arranged into numerically ordered classes. Histogram: graph of continuous data in a frequency distribution (no gaps) Rule of thumb: usually at least 5 classes, but no more than 15. Two variables: bivariate data x: independent variable y: dependent variable. Contingency table (allows for cross-tabulation of data) Clustered bar chart/stacked bar chart (converts contingency table into graphical form)
