Question

Indicate the scale of measurement used in the studies described below, and justify your choice.

b. A psychologist studied the physiological ef- fects of crowding by housing laboratory rats in conditions that were crowded (10 rats per cage) or uncrowded (2 rats per cage). After two months the adrenal glands of all che animals were removed and weighed to the

Answer 1

As you are going to compare the weight of two scenarios, so the variable we are interested in here is 'Weight'.

So, the scale of measurement used should be 'Ratio' because weight can take any finite numerical value (even in decimals). For example, values taken by variable may be 40.65 or 78.91. These are finite but not following a particular interval in measurement.

So, its a 'Ratio' scale measurement.