WT Cheng's answer to Koyuki Sky's Secondary 4 E Maths Singapore question.
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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.
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.
Date Posted:
4 years ago
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