Description. Performs a t-test for the comparison of the means of two independent samples. This test is not performed on data in the spreadsheet, but on statistics you enter in a dialog box.escription. Performs a t-test for the comparison of the means of two independent samples. This test is not performed on data in the spreadsheet, but on statistics you enter in a dialog box.
The states with the most weather-related disasters topping more than $1 billion are Texas, Missouri, Alabama, Georgia, Tennessee and South Carolina, which each had at least 31 expensive events in the past 30 years.
âWhen all is said and done, this year is going to be one of the worst years on record for U.S. damages,â said Antonio Busalacchi, president of the University Corporation for Atmospheric Research in Boulder, Colorado. Among the most devastating events were hurricanes Harvey, Irma and Maria and wildfires in northern California.