Macmillan Learning The given figure is a scatterplot of tree frog mating-call frequency (in notes per second) against outside temperature (in degr Celsius, C) for 16 American bird-voiced tree frogs. 9 Frequency (notes per second) 8 7 5- 4 3 2+ 16 18 20 22 24 26 28 28 Temperature (degrees Celsius) The line is the least-squares regression line for predicting call frequency from temperature. If another frog of this species initiates a mating call when the outside temperature is 24 C, you predict the call frequenc (in notes/s) to be close to 8. 9. 5.