PSYB01H3 Chapter Notes - Chapter 10: Effect Size, A Priori And A Posteriori, Statistical Process Control
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Chapter 10: quantitative data analysis: dunn found an interesting association between increased happiness and spending money on others, performed three different types of research, a cross-sectional national representative survey, experimental laboratory investigation longitudinal field study. To test hypotheses about the relationship between variables (how confident can we be that the effect we observed was not simply due to chance?) Level of measurement matters: before we calculate statistics involving a variable, we must identify that variable"s level of measurement, there are 4 levels of measurement, nominal, ordinal. 10 is 9 units more happiness than a response of 1. These procedures are more powerful than those that are allowable with an ordinal (or nominal) level of measurement. Graphing: several different types of graph are commonly used to depict frequency distributions. (cid:173) the most common and most useful: bar charts and histograms, bar chart contains solid bars separated by spaces (cid:173)
