Independent/Dependent Topic 4 Study Guide

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What is an independent variable?

Back

An independent variable is a variable that is changed or controlled in a scientific experiment to test its effects on the dependent variable.

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What is a dependent variable?

Back

A dependent variable is the variable that is measured and affected in an experiment. It depends on the independent variable.

Front

In the equation p = 3.25g, what does 'p' represent?

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In the equation p = 3.25g, 'p' represents the total price in dollars for 'g' gallons of gas.

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If a plate of cookies costs $3, how would you express the total earnings from selling 'p' plates?

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The total earnings from selling 'p' plates of cookies can be expressed as d = 3p, where d is the total dollars earned.

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What is the relationship between hours and rainfall if rain falls at a rate of 2.5 inches per hour?

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The relationship can be expressed as r = 2.5h, where r is the total rainfall in inches and h is the number of hours.

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What is the formula to calculate the total cost of 'g' gallons of gas at $3.25 per gallon?

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The formula is p = 3.25g, where p is the total price and g is the number of gallons.

Front

What does the term 'rate' mean in a mathematical context?

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In mathematics, 'rate' refers to a ratio that compares two different kinds of quantities, often expressed as a unit of measure.

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How do you identify the independent variable in a table of values?

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The independent variable is typically the quantity that you can control or change, often represented in the first column of a table.

Front

What is an example of a dependent variable in a study about plant growth?

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An example of a dependent variable in a study about plant growth could be the height of the plants, which depends on the amount of sunlight they receive.

Front

In the context of a bake sale, what would be the dependent variable?

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The dependent variable would be the total amount of money earned from selling cookies, which depends on the number of plates sold.