A student conducted an experiment to study how the price of a product influences sales. The student decided to set up a booth along a busy street at the same time and location for two different Saturday afternoons. The student tried to make sure that the sales environment was the same each time. The student would vary the price of the product throughout the afternoon and record the number of customers and the number of products sold at each price. What is a control variable in this experiment?
The time of day that the booth is open.
In this experiment, the time of day that the booth is open is a control variable, as it needs to remain consistent to ensure that any changes in sales can be attributed to the varying product price rather than differences in customer traffic at different times.
The number of products sold is a dependent variable in this experiment, as it is influenced by other factors such as the price of the product. It is the outcome that the student is measuring to assess the impact of price changes.
The price of the product is the independent variable in this experiment. It is the factor that the student is changing to observe how it affects sales, making it essential to the experimental design but not a control variable.
The total number of customers is also a dependent variable, as it can vary based on several factors, including the time of day and the price of the product. It is not controlled but rather observed in response to the varying price.
In this experiment, control variables are crucial for isolating the effects of the independent variable on the dependent variables. The time of day that the booth is open serves as a control variable, ensuring that conditions remain constant across trials. This allows the student to accurately assess the relationship between price and sales, eliminating confounding factors that could skew the results.
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