To study productivity in the Australian wheat industry, a sample of 35 farms were selected and for each one their wheat yield (tonnes per hectare) in 2019 was determined. The results are displayed in the stem and leaf diagram below. The lowest yield was 0.3 tonnes per hectare.

1. For this sample,determinethe range of wheat yield.

Stem Leaf (*0.1) Freq Cumul. VOUD WNYO 2 4 3 0 4 9 6 3 3 6 8 10 2 4 5 57 15 1 3 5 6 6 8 8 9 DO UTAWNY 23 0 0 1 3 3 5 7 7 9 9 10 33 0 4 2 35 a. For this sample, determine the range of wheat yield.\f