Eric Nicholas K's answer to Chaeyeoniee's Secondary 2 Maths Singapore question.
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Q46, Q47
For Q47, the 2.5 is obtained by averaging 0 and 5, 7.5 is obtained by averaging 5 and 10 and so on. This averaging of interval values in each class is needed because we are unsure of whether more people will be in the 0 to 2.5 range or the 2.5 to 5 range and so on.
For Q47, the 2.5 is obtained by averaging 0 and 5, 7.5 is obtained by averaging 5 and 10 and so on. This averaging of interval values in each class is needed because we are unsure of whether more people will be in the 0 to 2.5 range or the 2.5 to 5 range and so on.
Date Posted:
4 years ago
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