2.4. Calibration Plot and Its Significance

Try these first

1. 1.

   What is a calibration plot?

   Hint

   Think about the purpose of calibration.

2. 2.

   Name one key benefit of using standards in measurements.

   Hint

   Consider what reference points provide to measurements.

3. 3.

   What does a calibration plot represent?

   • Instrument response vs time
   • Instrument response vs unknown values
   • Instrument response vs known measurements

   Hint

   Remember what we discussed about standard measurements.

4. 4.

   True or False: The R-squared value indicates how well the calibration curve fits the data.

   • True
   • False

   Hint

   Think about the reliability of measurements.

5. 5.

   You have a calibration curve that fits your measured values nicely with an R-squared value of 0.95. However, several measurements further away from the calibration standard start showing significant variations. How would you analyze this discrepancy?

   Hint

   Consider recalibration if you see consistent deviations beyond acceptable limits.

6. 6.

   Your instrument's output shows a non-linear response at certain high values, making extrapolation to unknown samples risky. What strategies would you adopt to improve reliability?

   Hint

   Think about how to correct for or reconfigure the calibration parameters.