Table 2. Statistical Comparison of the Proposed Method with the Pre-established Extraction Spectroscopic Procedure for the Determination of AP in Sparkler Samples.
| proposed sensor | extraction spectroscopic | |
|---|---|---|
| mean concentration (w/w %) | 27.92 | 27.35 |
| SD (σ) | 1.23 × 10–2 | 5.92 × 10–1 |
| Sa,b | 9.65 × 10–1 | |
| ta,b | 1.67 | |
| ttableb | 2.306 | |
| Fb | 4.32 | |
| Ftableb | 6.39 | |
a
S2 = {(n1 – 1)s12 + (n2 – 1)s22}/(n1 + n2 – 2) and t = (a̅1 – a̅2)/(S(1/n1 + 1/n2)1/2) where S is the pooled SD, s1 and s2 are the SDs of the two populations with sample sizes of n1 and n2 and sample means of a̅1 and a̅2 respectively [t has (n1 + n2 – 2) degrees of freedom]; and here, n1 = n2 = 5.
b
Statistical comparison made on paired data produced with proposed and reference methods. The results given only on the row of the reference method.