Question

Raul wanted to see if Jiffy Pop or Von's brand popcorn left fewer unpopped kernels. What were Raul's variables, controls, and how might he have improved his experiment?

a) Variables: Type of popcorn (Jiffy Pop, Von's), Measure of unpopped kernels
b) Controls: Same cooking time, Same amount of popcorn used
c) Improvement: Standardize kernel size, Use a larger sample size

Answer 1

Raul's experiment had independent variables (types of popcorn), a dependent variable (unpopped kernels), and controls like cooking time and amount of popcorn.

Step-by-step explanation:

The correct answer is

• Variables: Type of popcorn (Jiffy Pop, Von's), Measure of unpopped kernels
• Controls: Same cooking time, Same amount of popcorn used
• Improvement: Standardize kernel size, Use a larger sample size

In Raul's experiment, the independent variables are the types of popcorn tested, Jiffy Pop and Von's brand. The dependent variable is the measure of unpopped kernels after cooking. Raul controlled variables such as the cooking time and the amount of popcorn used to ensure that these factors did not influence the outcome of the experiment. An improvement to Raul's experiment could be standardizing the kernel size to further control variability and using a larger sample size to improve the reliability of the results.