Table 4: Results of two sample T-tests, where the melons height mean values of aquaponics were compared to those of soil system and the differences were statistically evaluated for p < 0.05, after the two sample test for variance was performed by using OriginPro 2016 (OriginLab, Northhampton, MA).
|Time||Traditional system mean||Traditional system standard deviation||Aquaponic system mean||Aquaponic system standard deviation||Prob > |t|||Two sample test for variance||Prob > F|
|Day 0||5.81||1.22||5.4||1.92||0.48||Equal variances||0.09|
|Day 4||7||1.1||5.67||2.06||0.04||Different variances||0.02|
|Day 7||8.75||1.69||5.4||1.92||1.62E-05||Equal variances||0.63|
|Day 11||13.69||2.82||6.6||2.1||1.05E-08||Equal variances||0.27|
|Day 18||42.31||5.2||9.87||3.04||4.27E-19||Equal variances||0.05|
|Day 25||94.81||16.03||16.6||5.14||2.81E-13||Different variances||1.15E-04|
|Day 32||157.56||20||26.8||8.55||1.68E-16||Different variances||2.81E-13|
|Day 39||205||11.55||38.13||11.87||8.01E-27||Equal variances||0.91|
|Day 46||221.25||13.1||51.4||15.26||1.14E-24||Equal variances||0.56|
Prob > |t| and Prob > F indicate if the p-value was less than 0.05 in the two sample t-tests and two sample tests for variance, respectively.