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Testing Whether an Intercept Is Significantly Different from Zero

TESTING WHETHER AN INTERCEPT IS SIGNIFICANTLY DIFFERENT FROM ZERO [Pg.218]

For the permanganate calibration curve example examined earlier in this chapter, the intercept was found to be 0.0022 absorbance units with a standard [Pg.218]

To test whether the intercept b is equal to a given value bo, compute the f-statistic [Pg.219]

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Difference testing

Difference tests

Intercept

Significance testing

Significance tests

Significant difference

Zero intercept

Zeros, significant