The article “Ecological Determinants of Herd Size in the Thorncraft’s Giraffe of Zambia” (Afric. J. Ecol. 2010: 962–971) gave the following data (read from a graph) on herd size for a sample of 1570 herds over a 34-year period.

a. What proportion of the sampled herds had just one giraffe?
b. What proportion of the sampled herds had six or more giraffes (characterized in the article as “large herds”)?
c. What proportion of the sampled herds had between five and ten giraffes, inclusive?
d. Draw a histogram using relative frequency on the vertical axis. How would you describe the shape of this histogram?

Transcribed Image Text:

Herd size Frequency Herd size 1 589 9 33 Frequency Herd size Frequency 2 2 3 4 6 7 190 176 157 115 89 57 10 11 13 14 15 31 22 4 10 11 5 24 26 32 2 2 11 18 19 20 4 in 2 2 5 12 10 22 23 8 55 17