STATS 250 Lecture Notes - Lecture 1: Sleep Deprivation
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STATS 250 Full Course Notes
Verified Note
49 documents
Document Summary
A collection of procedures and principals for collecting data and analyzing info in order to help people make decisions when faced with uncertainty. Course goal- to learn tools for using data to gain understanding and making decisions. Variable- characteristic that differs from one thing to the next. Sample data- collected from a subset of a larger population. Population data- collected when all things in a population are measured. A mean from the population. ( the truth if we had it ) Could you compute the average amount of sleep for these 86 students? (students answered numerically how many hours of sleep they received) Could you compute the average sleep deprived status for these 86 students? (students answered yes or no to do you feel sleep deprived? ) A categorical variable places a thing into one of several groups or categories. Age, number of songs on a music playing device, time spent studying material for this class.
