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Table 1 Results of independent-samples t tests

From: Impacts of wind power development on Oklahoma’s public schools

Variable Year built N Mean % change P value (sig. at α = 0.05)
Local and county revenues Turbines in 2010 18 59.8 < 0.001
No turbines in 2010 90 27.8
Student-teacher ratio Turbines in 2010 18 5.3 0.889
No turbines in 2010 90 3.9
Per-student expenditures Turbines in 2010 18 90.8 0.435
No turbines in 2010 90 88.2