PADP 7120 Study Guide - Midterm Guide: Quartile, Standard Deviation, Scatter Plot

• School: University of Georgia
• Department: Public Administration and Policy
• Course: PADP 7120
• Professor: Anastasopoulos

Document Summary

Midterm study guide: coding with r: basic commands, view(dataset) > view of data, dim(dataset) > dimensions of the dataset. [1] rows columns: names(dataset) > names of columns (variables, dataset > access the data in a single column (variable, plot(x = dataset, y = dataset) > scatterplot of data (always x, y) Plot(dataset, dataset, type = 1 ) > for a line connecting points: addition, subtraction, multiplication, & division > can use raw numbers or can express with words. 5425 / 9643 = or dataset / dataset: head(dataset) or tail(dataset) > gives the first or last few entries of data, summary(dataset) > returns numerical summary (min, 1st quartile, median, mean, second quartile, & max) Median(dataset: table(dataset) > gives sample frequency, barplot(table(dataset) > plots entries, hist(dataset, dataset[#, #] > row-column notation. Variables: variable containing single number > a = 5, vectors > variables containing several numbers.