how to determine if cut marks on a cut mark are normal? how can i determine if the length and width of cut marks left in fabric are significantly different between group how to find if cut marks are significant in different groups on the same knit how to find differences in the width of cut marks in different patterns how can welch's t test be used to determine what kind of knife how can i tell if the cut marks are significantly different what test is used to determine the normality of the data for a knife what test determines the significance of the variance of the knife type can welch's t test be used to check if cut marks are different how to find out if a cut mark is significantly different between groups what test to use to determine if the variance is nonnormal how to find out if length and width of cut marks are significantly different between groups of knives how does length and width differ how do you find out if the lengths and widths of cut marks are significantly different between groups of knives? how can I determine the significance of cut marks in fabric with different variance and unequal n? which test measures difference in length width and length how to test the significance of length and widths how to determine if cut marks are significant how to find out if a piece of fabric is marked in a different color? does welch t test for nonnormal variance