PAP 3310 Lecture Notes - Lecture 1: John Vincent Atanasoff, Eyesteelfilm, Squared Deviations From The Mean
15 Mar 2016
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Tuesday, march 15, 2016 quantitative research/descriptive statistics. Percentage distribution of the variable of interest: tables or charts that summarize the distribution of a variable. Can be used for all types of variables. Graph/charts can be used to illustrate frequency distributions: bar charts, pie charts, line charts, histograms. Mode most frequent: all types of variables. Median middle: ordinal and interval-ratio variables. Mean average: interval-ratio variable from strict theoretical perspective, ordinal variables from a practical perspective if assumptions are satisfied. Range: difference between highest and lowest. Variance: sum of the squared deviations from the mean divided by the number of cases. Invented and built in 1937-1942: speed up solutions of problems in mathematical physics and statistics, no patent, us district court in 1973 recognized john atanasoff as the inventor of the electronic digital computer.
