The Oranges Grown on Commercial Farms in Victoria Were Damaged

The oranges grown on commercial farms in Victoria were damaged by some unknown fungi a few years ago.Suppose the manager of a large orchard wanted to study the impact of the fruit flies on the orange crops on a daily basis over a six-week period.On each day a random sample of orange trees were selected from within a random sample of acres.The daily average number of damaged oranges per tree and the proportion of trees having damaged oranges were calculated.In this study,the presentation and characterisation of the two main measures calculated each day (i.e.,average number of damaged oranges per tree and proportion of trees having damaged oranges)is called _________.