is there a negative linear correlation between IQ score and Exam score? as hours spent studying increase, does the school rating increase? what range of values do the correlatii s fall within?

Hours spent Hours spent School studying Exam score 1Q score sleeping rating Hours spent studying 1.00 0.82 0.48 -0.22 0.36 Exam score 0.82 1.00 0.33 0.04 0.23 1Q score 0.08 0.33 1.00 0.06 0.02 Hours spent sleeping -0.22 -0.04 0.06 1.00 0.12 School rating 0.36 0.23 0.02 0.12 1.00