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.
Women and children in developing countries are often the most vulnerable demographic groups after natural disasters. 8 out of 10 of the worldâs cities most at risk to natural disasters are in the Philippines. Natural disasters affect the number of people living below the poverty line, increasing their numbers by more than 50 percent in some cases.