Determine the evaluation guideline that applies best in questioning the results of the described study.
-A homeowner put a brand-name fertilizer/weed killer on half of his lawn and a generic fertilizer/weed killer on
The other half. After three weeks, the generic side had 1 weed per square meter, the other side 1.7 weeds per
Square meter. The generic side required two mowings in the 3 weeks, the brand-name side one. The
Homeowner concluded that the generic was superior to the brand-name.
A)Consider the type of study.
B)Consider the sample.
C)Consider possible confounding variables.
D)Consider the source.

Question

Quizplus · Accepted Answer

The homeowner's conclusion that the generic fertilizer/weed killer is superior based on the observed outcomes (fewer weeds, more frequent mowing) could be influenced by various uncontrolled factors, such as differences in sunlight, soil quality, or water distribution across the two halves of the lawn. These are examples of confounding variables that could affect the results independently of the products' effectiveness.

Determine the Evaluation Guideline That Applies Best in Questioning the Results