STA 1063C Study Guide - Quiz Guide: Tally Marks, Idoneal Number, Upper Class
Document Summary
Parameter: a number that describes a population characteristic, generally greek letters. Statistic: a number that describes a sample characteristic, usually letters with a bar/hat over it. Levels of measurement: nominal name only - qualitative only, categorized using names, labels, or qualities. Interval- quantitative only, can be ordered and differences can be calculated. Zero represents a position on a scale, not an inherent zero. Temperature is an example: ratio: quantitative only, similar to interval but a zero entry is an inherent zero. A ratio of two data entries can be meaningfully formed. Between 5 and 20, depending on data set size: find class width- divide the range (max-min) by the number of classes and round up to the convenient number, find class limits. Start with the min as your first lower class limit. Add the class width to find next lower class limit, find upper class limits: tally your data, count tally marks to find total frequency.
