Solution method
Step 1: Based on the column chart to complete the data table
Step 2: Find the largest and smallest ratio in the data table and then conclude
Detailed explanation
a) We have the following table:
Pupil |
Huy |
Flower |
Fate |
Dung |
Weight at the end of 2019 (kg) |
47 |
50 |
45 |
49 |
Weight at the end of 2020 (kg) |
51 |
52 |
53 |
forty six |
Ratio of weight at the end of 2020 and weight at the end of 2019 |
\(\frac{{51}}{{47}}\) |
\(\frac{{26}}{{25}}\) |
\(\frac{{53}}{{45}}\) |
\(\frac{{46}}{{49}}\) |
b) According to the above table, the largest ratio is \(\frac{{53}}{{45}}\), the smallest ratio is \(\frac{{46}}{{49}}\)
So the ratio of the weight at the end of 2020 and the weight at the end of 2019 of Duyen’s student is the largest, and that of student Dung is the smallest.
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