PSYC 1100 Lecture Notes - Lecture 5: Statistical Inference, Categorical Variable, Descriptive Statistics

• School: UConn
• Department: Psychological Sciences
• Course: PSYC 1100
• Professor: Eric Lundquist

Document Summary

It is numbers or values that help describe the characteristics of a specific group. Branch of mathematics concerned with collection, analysis, and interpretation of data. Use measures of central tendency (mean, median, mode) Use measures of variability (range, standard deviation) One type of data set is population which is a data set consisting of all outcomes, Inferential statistics: help us make conclusions or inferences about the data. measurements or responses of interest. Another type of data set is sample which is a data set which is a subset or proportion of the population data set. Typically use a sample because it is hard to obtain responses from entire population. Parameter is a numerical measurement using the population data set. Another type of measurement is a statistic. A statistic is a numerical measurement made using the sample data set. There is quantitative data which is numerical measurements or quantities. There is also qualitative data which is categorical measurements.