The process of science is not limited to acquiring and visualizing data (as you did in Part B). Analysis and interpretation of the data are also essential parts of scientific investigation. The graph that you produced in Part B is reproduced here.A graph of chirps per minute as a function of temperature. Chirps per minute are measured from 70 to 130 chirps on the y-axis, while the temperature is measured from 10 to 30 degrees Celsius on the x-axis. There are two lines in the graph. The first line labeled Snowy tree cricket goes up from 98 chirps per minute at 15 degrees Celsius to 128 chirps per minute at 30 degrees Celsius. The second line labeled Common field cricket goes up from 73 chirps per minute at 15 degrees Celsius to 100 chirps per minute at 30 degrees Celsius.

Which three of the following statements are valid conclusions that could be drawn from the graph above?
View Available Hint(s)for Part C
Hint 1for Part C. How to interpret the change in chirp rate with each change in temperature
Hint 2for Part C. Can you compare the difference in chirp rates across the range of temperatures tested?
Hint 3for Part C. The range of values shown on the x-axis

The difference between the chirp rates of the two species remains fairly constant across the range of temperatures tested.
The change in chirp rate with each change in temperature is similar for the two species.
It is possible for a male snowy tree cricket and a male field cricket to sing with the same chirp rate, but only at different temperatures.
Crickets of these two species sing only at temperatures between 15 °C and 30 °C.

1 answer

Based on the information provided in the graph and the characteristics of the data, the following three statements can be drawn as valid conclusions:

  1. The difference between the chirp rates of the two species remains fairly constant across the range of temperatures tested.
    This conclusion is drawn from observing that while both species have an increase in chirps per minute with rising temperature, the difference in chirp rates appears stable within the investigated temperature range.

  2. It is possible for a male snowy tree cricket and a male field cricket to sing with the same chirp rate, but only at different temperatures.
    This is a valid conclusion since the graph shows that the chirp rates for each species can overlap at certain temperatures, which means there might be a specific temperature at which they both reach the same chirp rate.

  3. Crickets of these two species sing only at temperatures between 15 °C and 30 °C.
    From the data presented, it is implied that the chirp rates for both species are only recorded and displayed for the range of 15 °C to 30 °C, suggesting that chirping activity may be limited to this temperature range.

The statement about the change in chirp rate being similar for the two species is not supported by the data, as the rate of increase in chirp rate differs between the species.