Male fireflies of the species Photinus ignitus attract females with pulses of light. Flashes of longer duration seem to attract the most females. During mating, the male transfers a spermatophore to the female. Besides containing sperm, the spermatophore is rich in protein that is distributed by the female to her fertilized eggs. The data below are measurements of spermatophore mass (in mg) of 35 males (Cratsley and Lewis 2003). These data are also available at whitlockschluter3e.zoology.ubc.ca.

a. Create a graph depicting the frequency distribution of the 35 mass measurements.

b. What type of graph did you choose in part (a)? Why?

c. Describe the shape of the frequency distribution. What are its main features?

d. What term would be used to describe the largest measurement in the frequency distribution?

Transcribed Image Text:

0.047,0.047, 0.037,0.037, 0.041,0.041, 0.045,0.045, 0.039,0.039, 0.064,0.064, 0.064,0.064, 0.065, 0.065, 0.079,0.079, 0.070,0.070, 0.066,0.066, 0.059,0.059, 0.075,0.075, 0.079,0.079, 0.090,0.090, 0.069,0.069, 0.066,0.066, 0.078,0.078, 0.066,0.066, 0.066,0.066, 0.055,0.055, 0.046,0.046, 0.056, 0.056, 0.067,0.067, 0.075,0.075, 0.048,0.048, 0.077,0.077, 0.081,0.081, 0.066,0.066, 0.172,0.172, 0.080,0.080, 0.078,0.078, 0.048,0.048, 0.096,0.096, 0.0970.097