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Published byCoby Gelling Modified over 3 years ago

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1 Press Ctrl-A ©G Dear 2009 – Not to be sold/Free to use Z-scoreComparisons Stage 6 - Year 12 General Mathematics HSC

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2 Z Scores – Comparison (1/2) MathEnglish How can I tell if I am doing better in Math or English? 7555 My scores were 75 in English and 55 in Math. English. x = 60 and s = 10 Math. x = 45 and s = 5 z = x – x s z = 75- 60 10 z = 1.5 z = 55- 45 5 z = 2 MathEnglish. Since Math had a larger z score than English. The best mark was ……

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3 Z Scores – Comparison (2/2) AB Am I doing better on golf course A or course B? 65A57B My scores were 65 on course A and 57 on course B. Course A x = 70 and σ = 5 Course B x = 65 and s = 4 z = 65- 70 5 z = -1 z = 57- 65 4 z = -2 Course BCourse A. Since Course B had a lower z score than Course A. the best score was …… Lowest Z Score Wins

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24 70 12 400 200 300 18 124 75 15 87 108 45 35 64 63 93 90 125 99.

24 70 12 400 200 300 18 124 75 15 87 108 45 35 64 63 93 90 125 99.

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