BIOL 2060 Lecture Notes - Mosaic Plot, Contingency Table, Scatter Plot
Document Summary
Relative frequency: proportion of observations having a given measurement (freq. Distribution: shows the proportion of the occurrences of each value in the data set. Frequency table: text, showing the # of occur. Bar graph : height of rectangular bars to visualize the frequency of each category. You can organize the table by putting the most frequent at the top. Rules for bar graph: baseline must be zero, and you must label the graph. Bars should be of the same width and start at the baseline and shouldn"t be fused together, provide total number of observations in the figure legend. Histogram: uses area of rectangular bars to display frequency, splits into bins, equal width, uses ranges. Mode (histogram): highest peak bimodal means 2 peaks. Skewed: if not symmetric skewed right: tail on the rightskewed left: tail on the left. Outliers: extreme data points, removed if shown to be errors.
