The standard deviation about the slope, sm: Answer The standard deviation of the

Question

The standard deviation about the slope, sm: Answer The standard deviation of the intercept, s ,1 Answer: The standard deviation for results obtained from the calibration curve, se Answer: The correlation coefficient, r Answer: The coefficient of determination, r or R2. Answer Using the calibration curve values you calculated above, determine the concentration of a specimen given an instrument response of 2.650 Answer: In a real case you w not know the real purity (concentration) of the evidence. Explain how you would "check" the accuracy of your calibration curve to support your determination for court testimony. Think check sample". Printed: @

Explanation / Answer

1)SS_resid = 0.06492
2)
S_xx = 1.145368
3)
S_yy = 5.056565
4)S_xy = 2.39108
5)
m =2.087609
6)
b=0.26579
7)
s=0.147111987
8)
s_m=0.137459
9)s_b=0.161502193

11)r =0.993559

SUMMARY OUTPUT Regression Statistics Multiple R 0.993559306 R Square 0.987160095 Adjusted R Square 0.982880127 Standard Error 0.147111987 Observations 5 ANOVA df SS MS F Significance F Regression 1 4.99163899 4.99163899 230.6465935 0.000619887 Residual 3 0.06492581 0.021641937 Total 4 5.0565648 Coefficients Standard Error t Stat P-value Lower 95% Intercept 0.265796054 0.161502193 1.645773652 0.198362328 -0.248176003 x 2.087608524 0.137459747 15.18705348 0.000619887 1.650150261

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