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Showing posts from December, 2011

Calculation of averages

Calculation of Averages Every term, students are tested a number of times on every subject and the different test results are used to calculate averages for the different subjects.  These averages reflect student performance in the different subjects, higher averages indicating better performance. Most schools use simple arithmetic averaging methods, such that a student who gets in a certain subject a 40% on one test, a 60% on the second, and an 80% on the third, gets an average of  (40%+60%+80%)/3 = 180%/3 = 60%. Another student whose average for the same subject over the same interval is 70%, for example, is considered to have done better than the previously mentioned student.

When promptness could save you from a disaster

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The 30 seconds that could have saved the Titanic Course should have been altered instantly By Jasper Copping Published: 00:00 December 5, 2011 59 Image Credit: Supplied Titanic ship London: It was a half minute that might have saved the world's largest passenger liner and nearly 1,500 lives. When the officer in charge of the ‘Titanic' was warned that an iceberg had been spotted in its path, he waited 30 seconds before changing course, a study has concluded. Had William Murdoch taken action immediately, the liner and 1,496 lives might well have been saved. The finding comes from a study for the centenary of the disaster next year. Investigators reappraised the 1912 Wreck Commission inquiry in light of research and evidence that has emerged since. The conclusion overturns the original verdict, which found that Murdoch, the first officer, steered away immediately but could not avert catastrophe because the iceberg had been spotted too late. Resea