Question

in the tutorial, an experiment examining the effect of brewing temperature on coffee taste was discussed and is illustrated below. match each component of the experiment to its correct description.

Explanation:

To solve this problem, we need to identify the components of the experiment (independent variable, dependent variable, and experimental units) based on the context of the experiment examining the effect of brewing temperature on coffee taste.

Step 1: Identify the Independent Variable

The independent variable is the factor that is manipulated or changed in an experiment. In this experiment, the researchers are changing the water temperature (cool, normal, very hot) to see its effect on coffee taste. So, the independent variable is water temperature.

Step 2: Identify the Dependent Variable

The dependent variable is the outcome that is measured or observed in response to changes in the independent variable. Here, the experiment measures the average bitterness score (how bitter the coffee tastes) as a result of different water temperatures. Thus, the dependent variable is the average bitterness score (or coffee taste, as measured by bitterness).

Step 3: Identify the Experimental Units

Experimental units are the entities to which the independent variable is applied (or from which data is collected). In this case, the experiment involves “one hundred people” (participants) who taste the coffee. These participants are the experimental units, as data (bitterness scores) is collected from them.

Matching the Components

• Independent Variable: Water temperature (the factor being manipulated).
• Dependent Variable: Average bitterness score (the outcome being measured).
• Experimental Units: One hundred people (the participants providing data).

If the task is to match these to labels (e.g., “Independent Variable,” “Dependent Variable,” “Experimental Units”):

• Water temperature → Independent Variable
• Average bitterness score → Dependent Variable
• One hundred people → Experimental Units

For example, if the options are:

• Coffee taste (Dependent Variable)
• Water temperature (Independent Variable)
• One hundred people (Experimental Units)

These would be the correct matches.

Answer:

To solve this problem, we need to identify the components of the experiment (independent variable, dependent variable, and experimental units) based on the context of the experiment examining the effect of brewing temperature on coffee taste.

Step 1: Identify the Independent Variable

The independent variable is the factor that is manipulated or changed in an experiment. In this experiment, the researchers are changing the water temperature (cool, normal, very hot) to see its effect on coffee taste. So, the independent variable is water temperature.

Step 2: Identify the Dependent Variable

The dependent variable is the outcome that is measured or observed in response to changes in the independent variable. Here, the experiment measures the average bitterness score (how bitter the coffee tastes) as a result of different water temperatures. Thus, the dependent variable is the average bitterness score (or coffee taste, as measured by bitterness).

Step 3: Identify the Experimental Units

Experimental units are the entities to which the independent variable is applied (or from which data is collected). In this case, the experiment involves “one hundred people” (participants) who taste the coffee. These participants are the experimental units, as data (bitterness scores) is collected from them.

Matching the Components

• Independent Variable: Water temperature (the factor being manipulated).
• Dependent Variable: Average bitterness score (the outcome being measured).
• Experimental Units: One hundred people (the participants providing data).

If the task is to match these to labels (e.g., “Independent Variable,” “Dependent Variable,” “Experimental Units”):

• Water temperature → Independent Variable
• Average bitterness score → Dependent Variable
• One hundred people → Experimental Units

For example, if the options are:

• Coffee taste (Dependent Variable)
• Water temperature (Independent Variable)
• One hundred people (Experimental Units)

These would be the correct matches.