It's difficult to determine the exact number of chirps based on the scatter plot, but we can use the line of best fit as an estimate.
Looking at the line of best fit, we can see that it intersects the y-axis at approximately 0.5 and has a slope of approximately 3. This means that for every 1 degree increase in temperature, we would expect the cricket to chirp approximately 3 more times per minute.
To estimate the number of chirps at 68 degrees, we can substitute 68 for temperature in the equation of the line:
number of chirps = slope * temperature + y-intercept
number of chirps = 3 * 68 + 0.5
number of chirps ≈ 205.5
Therefore, if the temperature outside were 68 degrees Fahrenheit, we would expect the cricket to chirp approximately 205.5 times per minute, based on the line of best fit.