Growth of roses

Use the diagram to explain that stacking the bars for each group can make it easier to compare the groups, especially when the data are ordinal.

Select Propn within Rose type. There is no change since all group sizes are same.

Click Stacked. Observe

The data below arose from an investigation into the growth characteristics of rose cuttings. Thirty cuttings were transplanted with each of four combinations of

The four groups are therefore called A1, B1, A2 and B2. The measurement of interest from each of these groups is the growth its roses after a period of time, classified as