HLTC15 Lecture Notes - Lecture 8: Criterion Validity, Standard Deviation, Interquartile Range
Document Summary
Hltc15 introduction to quantitative and qualitative health research methodologies. Lecture 8: basic statistics and quantitative methods ii health survey methods (chapter 10) Helps summarize and organize a large amount of research material using numerical, graphical, and tabular techniques: e. g. , histogram, frequency tables. Nominal scale: classify cases into categories that have no quantitative ordering: classify subjects according to their names. Interval: the order and the interval difference between two points: the presence of zero is arbitrary. Temperature: 0 degrees c = 32 degrees f; zero really doesn"t mean absence of something. Ratio: an encompass all the properties of nominal, ordinal, interval: however, zero is not arbitrary. Income: , , , ; sh means you"re broke. Pie graphs: professor once told me not to use this. Can you tell the difference between 19% and 20 %. Bar graph or histogram: bar graph: x-axis (abscissa) discrete variables (i. e. nominal or ordinal).
