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A student measures the range of sound frequencies that the human ear can hear by playing sounds for volunteers between 10 and 30,000 Hertz and asking them to raise their hand if they were able to hear it. What type of variable is the independent variable in this experiment?
A. Categoric
B. Ordered
C. Continuous
D. Discrete

Respuesta :

PBCHEM
Answer : Option  B) Ordered.

Explanation : When the student is measuring the range of sound frequencies that human ear can hear by playing sounds for volunteers between 10 and 30,000 hertz and asking them to raise their hand if they were able to hear it; this requires the continuous answer from the people who were involved in the experiment to answer whether they were able to hear the voice or not. So, it can be clubbed under the category of ordinal which is ordered category.

Answer:

B. Ordered

Explanation:

Categorical Variable: A variable that has two or more categories is known as Categorical Variable. For example, Gender has two categorical variables i.e. Female or Male.

Ordered Variable: It is a categorical variable for which we can order them. For example, the Highest Education Level has variable Elementary School, High School, Some College, College Graduate. Here ordering is possible.

Continuous Variable: It is a variable that can not be count, it can be any value between the range. For example Height, Weight, etc.

Discrete variable: It is countable variable. It can be only certain values. For example Number of absent students in the class, etc.

Here, in the question, it will be ordered variable since here variable is the range of sound between 10 to 30,000 hertz.

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