15.8.2.2. Log Pearson Type III

Try these first

1. 1.

   What does the Log Pearson Type III distribution help to analyze?

   Hint

   Think about what kind of data we are often concerned with in hydrology.

2. 2.

   What is the formula for calculating the return period?

   Hint

   Recall the variables involved in the return period formula.

3. 3.

   What is the Log Pearson Type III distribution primarily used for?

   • To analyze daily rainfall
   • To estimate extreme rainfall events
   • To predict barometric pressure

   Hint

   Think about extreme weather events.

4. 4.

   True or False: The return period is calculated by T = (n + 1)/m.

   • True
   • False

   Hint

   Recall the return period formula we discussed earlier.

5. 5.

   A region has recorded the following rainfall amounts (in mm): 200, 150, 300, 100, 350, 500, 250. How would you use the Log Pearson Type III distribution to estimate the return period for the maximum rainfall amount?

   Hint

   Ensure you first rank the data correctly and apply the formula.

6. 6.

   Describe how varying skewness in rainfall data can impact the predictions made using the Log Pearson Type III distribution.

   Hint

   Reflect on how 'normal' distribution does not always apply in real life.