Nothing
Call:
calibration(formula = Area ~ Conc, data = din32645)
Coefficients:
(Intercept) Conc
2481 9662
Adjusted R-squared: 0.983
Sum relative error: 0.7978
Blanks:
[1] 2003 1901 2212 1976 2279 1853 2165 2108 2368 1943
Conc lwr upr
LOD 0.053 0.036 0.096
LOQ 0.212 0.146 0.387
Check for normality of residuals:
Shapiro-Wilk normality test
data: residuals(calibration(formula = Area ~ Conc, data = din32645))
W = 0.90059, p-value = 0.2224
Check for homoscedasticity of residuals:
studentized Breusch-Pagan test
data: Area ~ Conc
BP = 1.6198, df = 1, p-value = 0.2031
Call:
calibration(formula = Area ~ Conc, data = din32645, check_assumptions = F)
Coefficients:
(Intercept) Conc
2481 9662
Adjusted R-squared: 0.983
Sum relative error: 0.7978
Blanks:
[1] 2003 1901 2212 1976 2279 1853 2165 2108 2368 1943
Conc lwr upr
LOD 0.053 0.036 0.096
LOQ 0.212 0.146 0.387
Call:
calibration(formula = Meas ~ Conc, data = neitzel2003)
Coefficients:
(Intercept) Conc
0.02753 2.48461
Adjusted R-squared: 0.9975
Sum relative error: 0.416
Blanks:
[1] 0.027 0.033 0.041 0.028 0.018 0.022 0.029 0.038 0.024 0.023
Conc lwr upr
LOD 0.009 0.006 0.016
LOQ 0.086 0.059 0.157
Check for normality of residuals:
Shapiro-Wilk normality test
data: residuals(calibration(formula = Meas ~ Conc, data = neitzel2003))
W = 0.85678, p-value = 0.06991
Check for homoscedasticity of residuals:
studentized Breusch-Pagan test
data: Meas ~ Conc
BP = 0.24883, df = 1, p-value = 0.6179
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