Data Graphics Flashcards
(17 cards)
positive uses
can accurately and succinctly present information; illuminating
negative uses
can conceal complicated data; confusing, misleading, dishonest
biased scale lie
scaling to skew the result
sneaky sample lie
preselected or self-selected participants provide data
interpolation lie
assumes that a value between two data points follows the same pattern
extrapolation lie
assumes that values beyond the data points will continue
inaccurate values lie
scaling to distort portions of the data
scatterplots
- depict the relation between two continuous variables
- represent every data point
- frequently used to depict correlations
no relation in a scatterplot
depicted as random dots
linear relation in a scatterplot
the relation between variables is best described by a straight line
nonlinear relation in a scatterplot
the relation between variables is best described by a line that breaks or curves in some way
line graphs
- used to illustrate the relation between two scale variables
- used to visualize changes in the values on the y-axis over time
line of best fit
line graph based on a scatterplot; represents the predicted y score for each x value
standard bar graph
- visual depiction of data in which the independent variable is nominal or ordinal and the dependent variable is a scale
- height of each bar typically represents the average value of the dependent variable for each category
pareto chart
- bar graph in which categories along the x-axis are ordered from highest to lowest bar on the right
- allows easier comparison and identification of most and least common categories
pictorial graphs
visual depiction of data
chartjunk
unneeded shit on a chart to distract the viewer
