Table 3: Results of two sample T-tests, where the cucumbers 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||7.5||1.58||3.6||0.97||3.03E-06||Equal variances||0.16|
|Day 4||8.5||1.65||5.3||1.25||1.19E-04||Equal variances||0.42|
|Day 11||15.7||1.83||10||1.76||1.30E-06||Equal variances||0.92|
|Day 18||24.5||5.28||21.4||3.81||0.15||Equal variances||0.34|
|Day 25||41.8||9.73||38.2||5.25||0.32||Equal variances||0.08|
|Day 32||60||14.79||48.6||6.48||0.04||Different variances||0.02|
|Day 39||79||19.63||51.1||5.72||1.36E-03||Different variances||1.11E-03|
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.