Table 2.

Analysis of variance results of T_p vs days and ${\int }_{{\overline{\nu }}_i}^{{\overline{\nu }}_f}{T}_{p}d\overline{\nu }$ vs days models measured in the ranges of 1465–1853 cm⁻¹ and 2614–4000 cm⁻¹ for the determination of age of beetroot using biphasic dose response model.

Model	Degrees of freedom	Sum of squares	Mean square	F value	Probability >F
Tp vs days (1465–1853cm−1)	7	0.958	0.137	4633.049	0
Residual	27	7.983 × 10−4	2.956 × 10−5	—	—
Uncorrected Total	34	0.959	—	—	—
Corrected Total	33	0.299	—	—	—
${\int }_{{\overline{\nu }}_i}^{{\overline{\nu }}_f}{T}_{p}d\overline{\nu }$ vs days (1465–1853cm−1)	7	10991.671	1570.238	3736.052	0
Residual	27	11.347	0.420	—	—
Uncorrected Total	34	11003.019	—	—	—
Corrected Total	33	3489.368	—	—	—
Tp vs days (2614–4000 cm−1)	7	4.374	0.624	5425.878	0
Residual	27	0.003	1.151 × 10−4	—	—
Uncorrected Total	34	4.377	—	—	—
Corrected Total	33	1.554	—	—	—
${\int }_{{\overline{\nu }}_i}^{{\overline{\nu }}_f}{T}_{p}d\overline{\nu }$ vs days (2614–4000 cm−1)	7	955315.187	136473.598	5119.528	0
Residual	27	719.751	26.657	—	—
Uncorrected Total	34	956034.938	—	—	—
Corrected Total	33	339269.079	—	—	—