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.