PSCI 2702 Study Guide - Univariate, Analysis Of Variance, Central Tendency
9 Jul 2014
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Introduction to stats: start with a research question, compose a research hypothesis with the intention of proving your previously stated question correct, identify the independent versus the dependent variables in the research hypothesis. Inferential stats: generalizations conducted from samples of populations, choosing samples that are representative. Meaning that you are attempting to represent an entire population with that chosen sample: must be fair, equal and unbiased. Ordinal level of measurement: rank order categories, only interval- ratio data can aquaria a measure of the mean. Therefore 50% of the data collected lies below the median and the remaining 50% of the data set lies above the median: example: 1, 3, 0, 2. Distribution curves: the normal distribution curve, positively skewed/ negatively skewed distribution curves: Measures of central tendency: mean, median, mode, problems with these measures include; Not all measures can be used for all data (nominal, ordinal, interval)
