A student measured the power of a motor operating at different temperatures. The student recorded a total of 11 measurements, one at each two degree interval between 10 degrees Celsius and 30 degrees Celsius. Which change in the procedure would most improve the validity of conclusions based on this investigation?
ADecreasing the range of the IV
BRepeating the experiment several times
CIncreasing the # of variables
DProducing a graph of numerical observations
ADecreasing the range of the IV
BRepeating the experiment several times
CIncreasing the # of variables
DProducing a graph of numerical observations