Study of quality of drinking water. Disasters (Vol. 28,2004) published a study of the effects of a tropical cyclone on the quality of drinking water on a remote Pacific island.Water samples (size 500 milliliters) were collected approximately four weeks after Cyclone Ami hit the island. The following variables were recorded for each water sample:
a. Town where sample was collected
b. Type of water supply (river intake, stream, or borehole)
c. Acidic level (pH scale, 1 to 14)
d. Turbidity level (nephalometric turbidity units = NTUs)
e. Temperature (degrees centigrade)
f. Number of fecal coliforms per 100 milliliters
g. Free-chlorine residual (milligrams per liter)
h. Presence of hydrogen sulphide (yes or no) Identify each variable as quantitative or qualitative.
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