and a Nano in a nifty 3D printed box up top to do some math and display the number of cans remaining as a simple bar graph. The sensor reads one bay, and the code multiplies by two to get the total.

35 We could show this data in a bar chart, but it would have a lot of bars! We can group them together so that we have fewer categories. When choosing intervals for the data sets make sure that ...

It is possible to read data and make comparisons using a bar chart. This type of graph, called a dual bar chart, shows the eye colour of year 7 and year 8 students. Image caption, Using the ...