PSY201H1 Lecture Notes - Lecture 2: Blood Alcohol Content, Driving Simulator, Level Of Measurement
21 Sep 2016
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Lecture 2 (september 20, 2016): data: description & distributions. Clicker question: which of the following best describes a data set: marco"s blood alcohol concentration (%) Data point: marco"s blood alcohol concentration along with his score on the driving simulator. Data point: blood alcohol concentration measures from all participants in the study. Distribution of data on some variable: blood alcohol concentration measures and driving simulator scores from all participants in the study (answer) Frequency distribution tables: way of summarizing data, ex: scores on a quiz (x) vs. the number of people who received that score on the quiz (f) The number of students (n) who took the quiz is the sum of the frequencies ( f) N = 15 students taking the quiz. Sum of the scores = fx: grouped frequency distribution table. Make intervals of data so you have people falling under a particular interval. Ex: age range/group: 18-24, 25-34 , 55-64, 65 and over.
