SOC222H5 Chapter Notes - Chapter 3-5: Histogram, Percentile, Standard Deviation
Document Summary
Histogram - differences in frequencies or percentages among categories of an interval-ratio variable. Categories are on the x-axis and frequencies on the y. Measures of central tendency - categories or scores that describe what is average or typical of the distribution: mode - category or score with the highest frequency (or %) in the distribution. When there"s two modes = bimodal: median - score that divides the distribution into 2 equal parts so that half the cases are above it and half below it (middle) Percentile - score below which a specific percentage of distribution falls. Ordinal or high in level of measurement: mean - adding up all the scores and dividing by the total # of scores (arithmetic average) = income, age, education, etc. Sensitivity to extremes - extreme scores in one direction make the mean unrepresentative and the median or mode may be better (ex.
