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secondary 4 | E Maths
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Koyuki Sky
Koyuki Sky

secondary 4 chevron_right E Maths chevron_right Singapore

Need help with part ii and iii

Date Posted: 3 years ago
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WT Cheng
Wt Cheng's answer
97 answers (Tutor Details)
1st
Hi Bijun,

ii) Train A is more consistently arriving late as the standard deviation has a narrower spread at 1.55 days

iii) Train B is more punctual as it has a lower mean at 4.98 days.