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.
Share |. As we say goodbye to 2010, AccuWeather.com takes a look at the unusual and extreme weather events that hit the United States over the past year. Worldwide, 295,000 people were killed in natural disasters in 2010, according to Munich Re, the world's top reinsurer.n March 13, the first storm slammed the East Coast and left hundreds of thousands without power. Up to 10 inches of rain was reported in parts of New England and New Jersey. The second storm hit two weeks later, when another nor'easter dumped more rain on the Northeast.