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.
Northeast U.S. Weather Reports. AccuWeather predicts Hurricane Harvey to be more costly than Katrina, Sandy combined Weather News - August 31, 2017, 3:35:03 PM EDT AccuWeather predicts Hurricane Harvey, which has wreaked havoc in Texas, to be the most costly natural disaster in United States history.