Background: Digoxin is a commonly used medication for treating domestic cats suf

Question

Background: Digoxin is a commonly used medication for treating domestic cats suffering from congestive heart failure. Its primary benefit is to help the heart muscles contract. While digoxin can be an extremely useful medication, the difference between a therapeutic dosage and a toxic dosage can be negligible, and overdoses frequently occur as it is difficult to estimate the muscle mass of an alive cat's heart accurately. Researchers conducted a postmortem study of adult domestic cats (heavier than a body weight of 2 kilograms) that died from symptoms of congestive heart failure. Objective: The first goal is to test for a positive association between the two variables, body weight and heart weight. The second goal is to predict the unknown heart weight when the body weight is given. Data: Download cats.csv. It is a sample of 97 male cats, so our inference is limited to the gender. a. Identify the explanatory variable and the response variable.

Explanation / Answer

Answer

Here we are required to predict the unknown heart weight when the body weight is given. That is, we need to develop a regression model to predict the heart weight from body weight. Hence heart weight is the response variable (dependent variable) and body weight is the explanatory variable (independent variable).

Hear weight - Response variable

Body weight - Explanatory variable

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