Sociology 2206A/B Chapter Notes - Chapter 11: Internal Validity, Statistical Inference, Linear Regression

• School: Western University
• Department: Sociology
• Course: Sociology 2206A/B
• Professor: William Marshall

Document Summary

Also called consistency checking e. g. education is cross classified by occupation: if a respondent is recorded as never having finished high school and is also recorded as being a medical doctor, the researcher checks for a coding error. Median indicates the point or score at which half the cases are higher and half are lower: these are often called averages, easiest to use and can be used with nominal, ordinal, interval or ratio data, bimodal a distribution with two modes, multimodal a distribution with more than one mode, it is the 50th percentile, can be used with ordinal, interval or ratio level data but not nominal level, the most widely used measure of central tendency, can be used only with interval or ratio level data, the mean is strongly affected by changes in extreme values (very large or very small)