PSYB01H3 Chapter Notes - Chapter 12: Pie Chart, Standard Deviation, Frequency Distribution
Document Summary
Chapter 12: understanding research results: describing variables and. Relationships among them: two reasons for using statistics, to describe the data, to make inferences, on the basis of sample data, about a population. Comparing group percentages: variable is nominal, females versus males (who typically have sex versus typically don"t have sex) Comparing group means: comparing the mean number of aggressive acts between two groups of children. Frequency distributions: when analyzing results, it is useful to start by constructing a frequency distribution of the data, a frequency distribution indicates the number of participants who receive or select each possible score on a variable. Graphing frequency distributions: bar graphs are the most common. Pie charts: a pie chart divides a whole circle or pie into slices that represent relative percentages, particularly useful when representing nominal scale information, not seen much in journal articles; but seen in newspapers and magazines.
