The excerpt is from an article that Roberto read for science class called "Using the Scientific Method to Study Tomatoes." The student performed an experiment to test his hypothesis about sunlight and plant height using two plants. He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. He also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results. Roberto critiqued the work. Which problem did Roberto most likely identify?

Question

Physics

Easton Cooke

5 October, 15:23

The excerpt is from an article that Roberto read for science class called "Using the Scientific Method to Study Tomatoes." The student performed an experiment to test his hypothesis about sunlight and plant height using two plants. He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. He also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results. Roberto critiqued the work. Which problem did Roberto most likely identify?

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Jessica Brady · Answer 1

The hypothesis of the study is that about sunlight and plant height using two plants

IV: Sunlight and Type of Plant

Levels: Different amounts of sunlight with the two types of plants

There should have been 6 levels of IV.

DV: Height of the plant

Roberto would most likely identify the 2 types of plant. These were not considered in the study. The study should have been multiple between-subjects experiment.