STAT 1100 Study Guide - Final Guide: Analysis Of Variance, Homoscedasticity, Confidence Interval
Document Summary
Stat 1100 midterm quesen covering topics from keller chapters 1- 8: descriptive vs inferential statistics, descriptive statistics: deals with methods of organizing, summarizing, and presenting the data in a convenient and informative way, ex: graphical techniques, numerical techniques. Interval data: real numbers, also referred to as quantitative or numerical: nominal data: values of nominal data are categories, also called qualitative or categorical, ex: responses to questions about marital status. Single = 1, married = 2, divorced = 3, Widowed = 4: ordinal data: appear to be categorical in nature, but their values have an order, a ranking to them. Mean > median: negatively skewed: tail goes to the left. Mean < median: modality: a unimodal histogram is one with a single peak, while a bimodal histogram is one with two peaks. Used to compare the variability of several distributions and make a statement about the general shape of a distribution. Iqr (interquartile range): 5# summary: min, q1, median, q3, max.
