Macmillan Learning Frequency notes per second 9 8 7 16 5 4 3 2 16 18 20 22 24 Temperature degrees Celsius 26 28 1 J D McLister The energetics of male reproductive behavior in the treefrog Hyla versicolor MS thesis University of California at Irvine 200 Given that the relationship between temperature and call frequency in the scatterplot is clearly linear and that te explains approximately 75 of the variability in call frequency you conclude that temperature is the main factor in mating call frequency temperature may influence mating call frequency temperature causes 75 of the variation in mating call frequency