KP390 Lecture Notes - Lecture 2: Fahrenheit, Categorical Variable, Central Tendency
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Is there a di erence between smokers and nonsmokers in terms of performance on a given task. Is there a relationship between the number of cigarettes smoked and scored on the same task. Categorical data are measured on a nominal scale: ordinal scales. Orders people, objects, events along some continuum. Di erences between points on the scale are arbitrary. Rank you preferences for the following soft drinks. Distance between scale points is unequal: interval scales. Fahrenheit scale of temperature: ratio scales. Variable that can take on only a small set of possible values. Variable that can take on any value. One value to best represent a group of data. Measured of central tendency are descriptive ** Put numbers in order from lowest to highest. N or n stands for the number of data points. Ex: 50 people were asked what there favourite football team was. Two values that are seen in the highest frequencies.
