An education researcher studied fourth graders to see if the amount of sleep the
ID: 3134020 • Letter: A
Question
An education researcher studied fourth graders to see if the amount of sleep they typically got had any effect on their test scores. She obtained the average amount of time sleeping per night and the score on the state reading test for a sample of fourth graders. To visualize the relationship, she wants to make a scatterplot of the data. Which variable should go on the horizontal axis? -
amount of time sleeping, because it is the explanatory variable
- amount of time sleeping, because it is the response variable
- state reading test score, because it is the explanatory variable
- state reading test score, because it is the response variable
Explanation / Answer
Explanation: The amount of time sleep(X) is the explanatory variable. The variable amount of time sleep should go on the horizontal axis.The response variable(Y) should be score on the state reading test for a sample of fourth graders.
It exlains the variation in the response variable. Because, It is given that the amount of sleep they typically got had any effect on their test scores.
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