Question 1182061: Determine the dependent and independent variables from these cases
1. An experimenter experiments on the effect of a drug on tuberculosis.
2.A scientist studies the effect of withholding affection on cockroaches
3. A researcher studies how many day's people can eat bread until the fall ill
Answer by CPhill(1987)   (Show Source):
You can put this solution on YOUR website! Here's a breakdown of the dependent and independent variables for each case:
**1. Effect of a drug on tuberculosis:**
* **Independent Variable:** The amount/presence of the drug (what the experimenter is manipulating).
* **Dependent Variable:** The severity or presence of tuberculosis (what is being measured to see if it is affected by the drug).
**2. Effect of withholding affection on cockroaches:**
* **Independent Variable:** The amount/presence of affection (what the scientist is manipulating).
* **Dependent Variable:** The cockroaches' health, behavior, or some other measured response related to affection (what is being measured to see if it is affected by the affection). It's important to be specific about *how* the effect is measured. For example, it could be cockroach growth rate, or their movement in a maze.
**3. How many days people can eat bread until they fall ill:**
* **Independent Variable:** The number of days people eat bread (what the researcher is manipulating or observing).
* **Dependent Variable:** The presence or onset of illness (what is being measured to see if it is affected by the number of days eating bread).
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