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56 Help file for Lertap 5 There's just a wee difference in these results. Can you spot it? The other line is now missing most of its stats. What about the joint operation of MDO and did-not-see. What happens then? Got time to look at results for two items delivered to 421 students over the internet, using the Test Pilot system from McGraw-Hill? In this example, a blank was used as the did-not-see code, and 9 as the code for missing data. On Q50, three students failed to provide an answer, while 106 students did not see it (Test Pilot presented Q50 to 315 of the 421 students). Q80 was presented to 320 students, and they all answered it. Look at the corresponding Statsf summaries: © 2003-2011, Curtin University, West Australia
