Exercise

# Quantification of the b-values

Based on the plot you generated in the previous exercise, you can safely use a completeness threshold of `mt = 3`

. Using this threshold, compute *b*-values for the period between 1980 and 2009 and for 2010 through mid-2017. The function `b_value()`

you wrote last chapter, which computes the *b*-value and confidence interval from a set of magnitudes and completeness threshold, is available in your namespace, as are the `numpy`

arrays `mags_pre`

and `mags_post`

from the last exercise, and `mt`

.

Instructions

**100 XP**

- Compute the
*b*-value and 95% confidence interval for earthquakes from 1980 through 2009 using 10,000 bootstrap replicates. - Compute the
*b*-value and 95% confidence interval for earthquakes from 2010 through mid-2017 using 10,000 bootstrap replicates. - Hit 'Submit Answer' to print the results to the screen.