Thunderstorm Summary Matlab Solution

Thunderstorm Summary

The figure below shows the location of all recorded thunderstorms taking place in the continental United States in 2013, broken up by the NOAA climate regions and recorded total damage (to both property and crops).

You can analyze this data using some summary statistics functions in MATLAB. The individual statistics by themselves are insightful, but they become even more so when you view them together. You will use the groupsummary function to do this with the table:

• stormData - Thunderstorm event data for the continental United States in 2013.

A preview of some of the first rows of the 14336 x 13 table stormData is shown below.

Note that the data includes NaN entries. The groupsummary function will automatically take care of omitting NaN values for you when necessary.

1. Use the groupsummary function to create a table showing the minimum, median, mean, and maximum total cost by region. Assign this table to the variable summaryRegionCosts.
2. Use logical indexing to extract out the subset of stormData with positive total cost ( i.e. stormData.Total_Cost > 0 ) as stormDataPos.
3. Now use the groupsummary function to create a table showing the minimum, median, mean, and maximum total cost by region, but for only the subset of data with total cost greater than zero. Assign this table to the variable summaryRegionPosCosts.

Answer 1

[Walter Roberson]

The figure below shows

That is not a question.

You can analyze this data

That is not a question.

You will use the groupsummary function

That is not a question.

Note that the data includes NaN entries

That is not a question.

Use the groupsummary function to create a table

That is not a question, that is a command.

Use logical indexing to extract out

That is not a question, that is a command.

Now use the groupsummary function

That is not a question, that is a command.

You did not ask even one question about MATLAB.

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