what is the best method to use to test for slope is ancova appropriate which method best describes the slope of a line how to test for different slopes in a time series of data how to show trends of weather and temperature what are slope tests best method to compare data to the slope of the line why use ancva why not use ancova why test for the slope of a time series line can you test for difference in slopes how to test for differences in temperature and climate data when can you test for differences in the slope of a line? when is ancova appropriate how do i test slope in a time series how to test for different slope of a line what test do i use to test for differences in a slope how to test for differences in slope of line why is ancova used does ancava test for slopes