Table 1: Results of two sample T-tests, where the peppers 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 | 21.81 | 2.66 | 22.7 | 2.27 | 0.38 | Equal variances | 0.6 |
Day 4 | 22.67 | 2.58 | 23.9 | 2.43 | 0.21 | Equal variances | 0.85 |
Day 7 | 25.25 | 2.67 | 24.8 | 2.56 | 0.62 | Equal variances | 0.91 |
Day 11 | 27.88 | 2.94 | 26.3 | 2.96 | 0.18 | Equal variances | 0.95 |
Day 18 | 35 | 3.81 | 29.3 | 3.17 | 2.51E-04 | Equal variances | 0.54 |
Day 25 | 43.13 | 5.62 | 32.8 | 3.65 | 7.65E-06 | Equal variances | 0.15 |
Day 32 | 54.75 | 7.07 | 36.4 | 4.17 | 1.83E-08 | Equal variances | 0.08 |
Day 39 | 62.81 | 8.15 | 38.2 | 3.71 | 3.21E-10 | Different variances | 0.01 |
Day 46 | 70.44 | 8.99 | 41.5 | 4.93 | 1.92E-10 | Equal variances | 0.05 |
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.