bar and pie charts intro to stats

Which one is better?

It depends on the situation.

Vilfredo Pareto

Italian mathematician arrange bar charts by ascending, descending order so more aesthetically pleasing

pie chart

a type of graph in which a circle is divided into sectors that each represent a proportion of the whole. COMMON VARIABLE

squigly line

above zero on bar graph. used to skip values.

similarity between bar and pie chart

both show distribution of categorical data.

x axis represents

categorical variable

rule for converting pie chart to bar graph

every pie chart can be a bar graph but not every bar graph can be a pie chart, when data is "not part of a whole"

bar graph

graph that displays frequency of a categorical variable. shows values for each bar next to each other for easy comparison.

Pareto bar graph

orders bars by increasing or decreasing order left to right.

difference between bar and pie chart

pie chart compares parts of a whole sample or pop. bar graph are for comparing groups of the same units or tracking change over time.

y axis represents

quantitative variable

what to include with bar graph

title, axes labels, scale, bars source

what to include with pie chart

title, labels, percentages, source