Table 7 Ferric reducing antioxidant power (FRAP) of crude aqueous and methanolic extracts of leaves, stem and roots of Chasmanthera dependens and ascorbic acid

0.41 ± 0.05

\(y=\frac{a}{1 +{\left(\frac{x}{b}\right)}^{c}}\)

0.992

0.52 ± 0.07

\(y=a\left[1-\mathrm{exp}\left[-{\left[\frac{x+c{\left(In 2\right)}^{1/d}-b}{c}\right]}^{d}\right]\right]\)

0.998

2.26 ± 0.11

\(y=\frac{a}{1 +\mathrm{exp}\left(-\left(\frac{x-{x}_{0}}{b}\right)\right)}\)

0.973

0.54 ± 0.05

\(y=\frac{a}{1 +\mathrm{exp}\left(-\left(\frac{x-{x}_{0}}{b}\right)\right)}\)

0.965

0.73 ± 0.04

\(y=\frac{a}{1 +{\left(\frac{x}{b}\right)}^{c}}\)

0.997

2.67 ± 0.23

\(y=\frac{a}{1 +\mathrm{exp}\left(-\left(\frac{x-{x}_{0}}{b}\right)\right)}\)

0.954

0.18 ± 0.00

\(y=\frac{a}{1 +{\left(\frac{x}{b}\right)}^{c}}\)

0.953