PSY 2810 Lecture Notes - Lecture 11: Psych, Level Of Measurement, Normal Distribution
4 Oct 2016
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Document Summary
Outlier a data point that is extremely unlike the rest of the collected data (within the same condition) Frequency tables make the more apparent than unorganized data does. Reasons they can occur: coding errors the experimenter makes a mistake when recording data, participant error simple mistake by the person participating in the experiment, meaningful differences sometimes they matter. Experience expert / went though something. Histograms a graphical depiction of the frequency of data. Bins are exclusive, equal sized and have no gaps. Frequency polygon used points instead of bars and is used for continuous variables. Symmetrical distribution of data with a single peak and bell shape. Bi and multi-modal graphs have more than one peak. Negative skew graphs have a tail for the smaller values. Positive skew graphs have a tail for the larger values. Flat distribution no clear peak in the data. We can make graphs for nominal data as well. They will have spaces in between their bars.
