a Write down the highest and lowest crop supply values for low and high income
countries.
b Is there any overlap between crop supply values between the two groups?
Explain.
c Write down the most common crop supply value for each group.
d From the data, does it look as though low and high income countries have
equal access to food supplies? Explain.
5 Despite advances in treatments and education, HIV continues to be an issue
worldwide. Stem-and-leaf plots for the number of new HIV cases in countries
categorized as high and low income are shown below.
High-income countries
Low-income countries
0
457
1
13
1
00147
2
128
2
012447
5
59
3
125
7
15
21
0
key: 519 59 000
key: 110=1000
a What conclusion(s) can you draw based on the data? Justify your answer.
b What questions do you have about the data that might influence your
conclusion(s)?
ATL2
c Why do you think there is such a difference between the number of new HIV
cases in the two regions?
d How effective is a stem-and-leaf plot for representing data so that you can draw
conclusions? Explain.
e What might it be like to live in a region where HIV infection rates are high?
Explain.