A sample of fish is taken from a lake to measure the effect of pollution from a

Question

A sample of fish is taken from a lake to measure the effect of pollution from a nearby factory on the fish Experiment Observational study A political pollster reports that his candidate has a 10% lead in the polls with 10% undecided. Experiment Observational study A quality control specialist compares the output from a machine with a new lubricant to the output of machines with the old lubricant. Experiment Observational study Determine which of the four levels of measurement (nom ordinal, interval, ratio) is most appropriate. The temperatures of eight different plastic spheres. Nominal interval Ratio Ordinal Identify the level of measurement for data that can be classified according to color. Ordinal interval nominal ratio Identify the level of measurement for data that are the numbers on the shirts of a girl's soccer team. ratio nominal ordinal interval Identify the level of measurement for data that are the temperature of 22 refrigerators. Interval ratio nominal ordinal

Explanation / Answer

Result:

Q11.

Observational study

( there is no intervention, only observation)

Q12.

Observational study

( there is no intervention, only observation)

Q13

Experiment.

(There is intervention by giving new lubricant and old lubricant.)

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