Within a single use of the scientific method, which of the following steps can only be performed after data is collected? a. conclusions are drawn. b. controls and variables are chosen. c. the initial hypothesis is formed. d. the initial experiment is designed.

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline. which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used