A friend tells you that he conducted a scientific experiment this summer in which he talked to ten plants and measured their growth.He found that these plants grew faster and taller than any plants he had ever grown.From your friend's research, can we conclude that talking to plants is the cause of their fast growth?
A) Yes, because the scientific data was collected.
B) Yes, because a positive correlation would found between talking and plant growth.
C) No, because the placebo effect was not considered.
D) No, because there was no control group.

Question

Quizplus · Accepted Answer

Without a control group, it is not possible to conclude that talking to the plants caused the growth, as there may be other factors that influenced the growth. The control group would provide a baseline for comparison and determine if the observed growth was actually due to the treatment (talking to the plants) or due to other factors such as soil quality, light exposure, or temperature.

A Friend Tells You That He Conducted a Scientific Experiment