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.
1 The single storm that established the most state records was the 1993 Superstorm, which broke snow-depth records in four states within three days: Georgia, Tennessee, North Carolina, and Maryland. 2  Other pairs of states that set records within a few days of each other were:  California and Nevada (March 1911)