Line charts are generally used when there is some kind of progression or internal order between the values on the x-axis. Like when plotting time series for instance.
Here the choice of lines causes the viewer to look for an order or grouping that doesn't exist because the brands are nominal data.
FailedTuring t1_irmg0pi wrote
Reply to [OC] Price differences per gas station brand (Germany) by wann-tanken
Just some constructive criticism:
Line charts are generally used when there is some kind of progression or internal order between the values on the x-axis. Like when plotting time series for instance.
Here the choice of lines causes the viewer to look for an order or grouping that doesn't exist because the brands are nominal data.