SOAN 3120 Lecture Notes - Xscale, Grater, Standard Score

• School: University of Guelph
• Department: Sociology and Anthropology
• Course: SOAN 3120
• Professor: Michelle Dumas

Document Summary

Look for pattern and departures from that pattern. Larger numbers the larger the sample size, the more likely you"ll get a smooth curve. Alternative: scale (area) height of the bar tells us number of observations in each bin. Curve around the data density curve because you"re looking at the density of the population that it"s taking up in that space. Median is the value of the variable that has the half the area below it, and half the area above it. Mean is the average of many averages because when you have a density curve and looking at inferential statistics, you"re usually using more than one sample, so it takes several means to get to that one. Essentially a balancing point of the density curve. Mean and median coincide when it"s symmetric. In skewed, both the mean and median are pulled in the direction of the skew the mean more so than the median.