Bar Graphs and Histograms using Geogebra

Bar Graphs and Histograms

Bar graphs and histograms look very similar, but they are used for different types of data. A bar graph is typically used to represent categorical or discrete data where histograms are typically used to present numerical or quantitative data.

Bar Graphs: Usually have spaces between the bars. The order of the data does not matter except for convenience.
Sample Data:
A sample of 205 students were asked their favorite fruit. Here is the data.
banana 50
apple 60
orange 25
blueberry 10
watermelon 60

A = {1,2,3,4,5}
B = {50, 60, 25, 10, 60]
BarChart[A,B, .7]

Histograms: These are used to compare numbers of data grouped into intervals. Order matters in the data depicted.
Ages of Presidents at Death

Age = { 67, 83, 90, 73, 85 ,68, 78, 80, 53, 65 ,71 ,79 ,56 ,77 ,64 ,74 ,66, 49, 63 ,57, 70, 67, 58, 71, 60, 57, 67, 72, 60, 63, 46, 90, 78, 88, 64, 81, 93, 93 }
FillColumn[1,Age] (create from the spreadsheet view)

Note: change intervals to 10 years (40-49, 50-59, etc) so it is by decades :)

Видео Bar Graphs and Histograms using Geogebra канала Penelope Templeton