International Journal of Analytical Chemistry / 2020 / Article / Tab 3

Research Article

A Simple Spectrophotometric Method for Determination of Glyoxylic Acid in Its Synthesis Mixture

Table 3

Statistical comparison between spectrophotometric and HPLC methods (continued).

MethodF-test calculatedF-test criticalt-test calculatedt-test critical

Spectrophotometric12191.354.3
HPLC

F- and t-tests were calculated using measurement data of 0.35 M GA concentration, with 2 degrees of freedom, and 95% confidence level for both series. According to statistical tables given in [28].

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