Children are randomly assigned to complete a low,moderate,or high difficult task.The time (in seconds)it takes them to complete the task is recorded.In this example,the level of task difficulty is the dependent variable.

Question

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The level of task difficulty is the independent variable because it is being manipulated to observe its effect on the dependent variable, which is the time it takes for the children to complete the task.

Children Are Randomly Assigned to Complete a Low,moderate,or High Difficult