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Chapter 3: Q. 1 (page 158)

How sensitive to changes in water temperature are coral reefs? To find out, measure the growth of corals in aquariums where the water temperature is controlled at different levels. Growth is measured by weighing the coral before and after the experiment. What are the explanatory and response variables? Are they categorical or quantitative?

Short Answer

Expert verified

Water temperature is the explanatory variable, and weight is the response variable. Temperature and weight of the water are quantitative factors.

Step by step solution

01

Concept Introduction

An explanatory variable is one that we believe explains or causes changes in the response variables, whereas a response variable measures the study's outcome or result.

02

Explanation

Coral development will rise or decrease depending on the temperature of the water, Because the temperature of the water changes throughout the year. As a result, the annual coral growth is a response variable, whereas the sea surface temperature is an explanatory variable.

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