11.5. Correcting Inconsistent Records

Try these first

1. 1.

   What is the main purpose of correcting inconsistent rainfall records?

   Hint

   Think about what errors in data could affect.

2. 2.

   What does the Ratio Method use to correct data?

   Hint

   What formula is involved with slopes?

3. 3.

   What is the primary method for correcting inconsistent records discussed in the text?

   • Measurement Adjustments
   • Ratio Method
   • Observation Review

   Hint

   Think about the method that uses slope ratios.

4. 4.

   True or False: The Linear Regression Method uses multiple observation points to find a correction factor.

   • True
   • False

   Hint

   Consider what data averages reveal.

5. 5.

   A rainfall database shows discrepancies between two nearby rain gauges. After analyzing, you find the old slope is 1.8, new slope is 1.2, and the original rainfall recorded was 90 mm. Correct the rainfall data using the Ratio Method.

   Hint

   Remember to apply the Ratio Method formula.

6. 6.

   You have observed rainfall data from a nearby station that has historically recorded values inconsistent with nearby data. After regression, you find coefficients a=10 and b=0.5. If the observed value from this station is 20 mm, calculate the corrected value.

   Hint

   Plug those values into the regression equation.