Independent and Dependent Variables Explained

What is an independent variable in the context of scientific experiments?

• A variable that is not used in experiments

• A variable that remains unchanged throughout the experiment

• A variable that changes in response to other factors

• A variable that can be either dependent or independent

Which of the following is typically an independent variable?

• Calories burned

• Number of items

• Sleepiness level

• Total cost

In a scenario where time is plotted against total cost, what does the total cost represent?

• Neither

• Both

• Dependent variable

• Independent variable

In the context of a streaming subscription, what does the monthly cost depend on?

• Quality of streams

• Type of subscription

• Number of streams watched

• Number of months subscribed

If 'm' represents miles run and 'c' represents calories burned, which is the dependent variable?

• m

• c

• Both m and c

• Neither m nor c

Which variable is independent when considering the number of hours practiced and the test grade received?

• Both are dependent

• Test grade received

• Number of hours practiced

• Both are independent

Which of the following best describes the relationship between hours of sleep and sleepiness at school?

• Unrelated

• Inversely proportional

• Constant

• Directly proportional

What does the equation 'y = 3x' imply in the context of Paul's 5k training?

• For every unit increase in x, y increases by 3

• For every unit increase in y, x increases by 3

• x and y are unrelated

• x decreases as y increases

What role does 'x' play in the equation 'y = kx'?

• Coefficient

• Dependent variable

• Independent variable

• Constant

In a graph representing training weeks against miles run, what does the slope of the line indicate?

• Increase in miles per week

• Speed of running

• Decrease in training intensity

• Consistency of training