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.
The deadliest natural disaster in US history, the Galveston Hurricane is estimated to have killed between 6,000 and 12,000 people. The storm hit the city of Galveston, Texas, on Sept. 8, 1900 with winds up to 145 miles per hour. Pictured: House in Galveston, Texas, October 15, 1900