GUO XIAOFEI's answer to Marc's Primary 6 Maths question.
done
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Average= total height /(divide) number of children
Difference in average (3) is a result of recording the wrong height (difference of 63)
This 63 is a result of average X number of children. In this case, the difference in average is 3. Number of children 21
Difference in average (3) is a result of recording the wrong height (difference of 63)
This 63 is a result of average X number of children. In this case, the difference in average is 3. Number of children 21
Date Posted:
6 years ago
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