The Sharp EL-520W just keeps on giving. \u00a0Sometimes I wonder, “Will it do that?” Usually, it turns out that it does.<\/p>\n
Relating to statistics, I already wrote an article (see here<\/a>) about how to find standard deviation on the Sharp EL-520W. Today I’ll discuss one of its handy functions for finding normal probabilites.<\/p>\n Example 1<\/strong>: Assume z has a standard normal distribution. Find probability(z<-0.44).\n\nSolution: \n\nStep 1: Go into STAT mode, by keying MODE, then 1<\/span>. You will be transferred to another menu: choose SD (which is 0). The screen should now say Stat 0<\/span>.<\/p>\n Step 2: Press MATH<\/span>. You will arrive in a menu. To calculate p(z<-0.44), choose P (which is choice 1). The screen should now say P(_<\/span>. It’s waiting for you to enter your value.<\/p>\n Step 3: Key in -0.44, then close the bracket. Next, press equals. Hopefully, you see the answer 0.329968<\/a><\/p>\n Example 2<\/strong>: Find prob(z<1.1).\n\nSolution: following the steps above, entering 1.1 instead of -0.44, you hopefully arrive at the answer 0.864334<\/span><\/p>\n There are even more functions to discuss, but that’ll suffice for this post.<\/p>\n The values the calculator is giving match the values in the standard normal table (aka, z-score table) found in Appendix B of my source listed below. That’s nice confirmation:)<\/p>\n Source:<\/p>\n Zimmer, Cooke et al. Mathematics of Data Management<\/em>. Toronto: Nelson, 2003.<\/p>\n