EAB 3764 Lecture Notes - Lecture 3: Prussian P 8, Datapoint, Bar Chart
9 Jan 2017
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Axis labels: y (responding ), x ( temporal dimension: sessions, days, etc. ) Units (numbers) for y and x axes. Data points: x-y plots representing values of r across sessions. Phase-change lines: vertical lines separating experimental conditions. 20: frequency plot: each data-point value is graphed separately, cumulative record: each data point-value is added to the previous value. Characteristics of data evaluated via graphical analysis: level: mean (average) value of a set of data, trend: systematic change in level across measurements, variability: degree of fluctuation in a data set around its mean. 0 e v i t p u r s i. 0 d e t e l p m o. Traditional group design: question: does x make a difference, pre-test-posttest control design. Compare group averages and variability: adv: Answers general questions about effects on population: disadv: Large # people increases statistical sig (bias) Reliably of effects for a subject group unknown.
