The Volcanic Explosivity Index (VEI) is based primarily on the amount of material ejected from a volcano, although other factors play a role as well, such as height of plume in the atmosphere. The following table shows the number of volcanic eruptions (N) over the past 10,000 years having a VEI of between 2 and 7.
There are also VEI values of 0, 1, and 8. There is a level 0 volcano erupting somewhere on the Earth essentially all the time. There are one or more level 1 volcanoes essentially every day. The last known level 8 volcano was about 26 000 years ago
- a. Show the resulting data trendline, with equation and R2 value, on the appropriate graph type (xy scatter, semilog, or log–log) to make the data appear linear
- b. How many level 1 volcanoes does the model predict should have occurred in the last 10,000 years?
- c. How many level 8 volcanoes does the model predict should have occurred in the last 10,000 years?
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