Question

A student measured the power of a motor operating at different temperatures. The student recorded a total of 11 measurements, one at each 2 degree interval between 10°C and 30°C. Which change in the procedure would most improve the validity of conclusions based on this investigation?

Answer 1

As a rule of thumb, in order to improve the reliability and accuracy of an experiment, it is best if the experiment is repeated several times. The increased number of trials ensures that the readings observed have minimal random error.