QMS 102 Study Guide - Final Guide: Percentile, Datu, Standard Deviation

• School: Ryerson University
• Department: Quantitative Methods
• Course: QMS 102
• Professor: professor

Document Summary

Inferential stats: drawing conclusions & making decisions concerning a polo based on only the sample data. e. g. -estimation. Population: (n) all the members of a group about which u want to draw conclusions. Sample: (n) portion of the population selected for analysis. Quantitative: numerical desecrate: distinct values, 1,2,3 continuous: any value within a range 2. 3, 2. 367, age, qualitative: categorical, yes or no. Level of measurement noir (nominal, ordered, interval, ratio) Ordered?-> yes, equally spaced?-> yes, zero means none?->yes, ratio. Bar charts: show each cat, length of ea rep amount, frequency or % of values falling into a category. Frequency distribution table: summary table that divide quantities data into ranges and records data in ea range. Frequency: tally of the times data has appeared in that class range. Cumulative frequency: (y-axis) show a running total (zig-zag-> add 1st cf with 2nd freq) Relative frequency: c. f. / total f = decimal (all should equal 1)