Table III

Results of t-tests for aggregate fall to spring surveys

Data Collection PeriodtDegrees of freedomSignificance
Fall −1.592 21 0.127 
Spring −2.836 21 0.010 
Data Collection PeriodtDegrees of freedomSignificance
Fall −1.592 21 0.127 
Spring −2.836 21 0.010 

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