Determine whether the given value is from a discrete or continuous data set. 1) The number of limbs on a 2-year-old oak tree is 21.
A) Discrete.
B) Continuous.
2) The weight of Bill's pack as he sets off on a backpacking trip is 48.3 lb.
A) Discrete
B) Continuous Determine which of the four levels of measurement (nominal, ordinal, interval, ratio) is most appropriate.
3) Temperatures of the ocean at various depths.
A) Ordinal.
B) Nominal.
C) Ratio.
D) Interval.
4) The subjects in which college students major.
A) Ratio.
B) Nominal.
C) Ordinal.
D) Interval.
Determine whether the given description corresponds to an observational study or an experiment.
5) A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on the fish.
A) Experiment.
B) Observational study.
6) A doctor performs several diagnostic tests to determine the reason for a patient's illness.
A) Experiment.
B) Observational study.