SOCI 3030 Lecture Notes - Lecture 1: Standard Deviation, Histogram
21 Sep 2017
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Document Summary
What is statistics: quantitative data, summaries or calculations done on raw data, techniques for collecting, analyzing and interpreting data, the science of creating and applying these techniques. Categorical: nominal: no numeric value and cannot be ordered (unordered) ex. Pop culture references on the q cards: ordinal: no numerical value but can be ordered ex. Rank in the military, spicy meter at a restaurant, game difficulty level, agreement survey agree, strongly agree, neutral, disagree, strongly disagree. Can take any numerical value: discrete: inherent numerical value. How the value of a variable is spread out: central tendency (mean, median, mode, dispersion (range, standard deviation) A subset of people picked from a large group of people (population) Relative frequency = number of times a value occurs / total number of value. Histogram - visual way of representing a frequency table. All possible values should be listed even if they are not in the array between the highest and lowest.
