The graph on the left represents the number of sleeping hours a middle school's students get. The graph on the right shows the correlation between the number of sleeping hours and the grades students receive in school. It's clearly shown that the more one sleeps the better grade one will receive. However, most middle school students from the left graph sleep around 7-8 hours, which is not the most ideal sleeping pattern for good grades. Student should sleep more to do well in school.
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