A researcher conducted a small study to tell what type of grow lights are the be

Q: A researcher conducted a small study to tell what type of grow lights are the be

1a) It is an empirical study. Because Empirical evidence (the record of one's direct observations or experiences) can be analyzed quantitatively or qualitatively. 1b) plant growth is dependent variable. 1c) type of light is independent variable. 1d) the fact that the researcher forgot to water some of the plant is confounding factor. 1e) "15 plants without any lights" is control.

ID: 3334441 • Letter: A

Question

A researcher conducted a small study to tell what type of grow lights are the best to improve plant growth in his own greenhouse. The researcher compared three types of lights: LEDs, incandescent and fluorescent. A basic literature review indicated that that LED lights provided the best plant growth in similar studies. The research was designed like this: Four of each type of lamp were put up. 4 LED lights, 4 incandescent lights and 4 fluorescent lights, all with similar wattage ratings. 15 basil plants, that had the same height at the start of the study, were placed under each set of lights. For comparison, 15 plants were placed without any lights above them. Plant growth was measured at the beginning and again 2 weeks later The researcher repeated the study three times. 1 10 Points Is this study is observational or empirical? 1b "plant growth" is? Independent variable /Dependent variable Confounding factor/ Constant / Control 10 Points 10 Points "type of light" is? Independent variable /Dependent variable /Confounding factor/ Constant / Control 1d The fact that the plants had the same height at the start of the study? Independent variable /Dependent variable /Confounding factor/ Constant / Control 10 Points 10 Points 1e The fact that the researcher forgot to water some of the plants is: Independent variable / Dependent variable /Confounding factor/ Constant / Control 10 Points 1f "15 plants without any lights is? Independent variable /Dependent variable /Confounding factor/ Constant / Control

Explanation / Answer

1a) It is an empirical study. Because Empirical evidence (the record of one's direct observations or experiences) can be analyzed quantitatively or qualitatively.

1b) plant growth is dependent variable.

1c) type of light is independent variable.

1d) the fact that the researcher forgot to water some of the plant is confounding factor.

1e) "15 plants without any lights" is control.

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A researcher conducted a small study to tell what type of grow lights are the be

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