Question
Explain by giving example that how can we choose a suitable scale?
✓
Answer
While choosing the most suitable scale for drawing a graph, we should keep the following points in mind
(i) The difference between the highest and lowest values of each quantity.
(ii) The intermediate values of each quantity, so that with the scale chosen, it is easy to mark the values on the graph.
(iii) To utilise the maximum part of the paper on which the graph is to be drawn, assume that we have a graph paper of size 25 cm $\times$ 25 cm and we have to accommodate following data
Since, one of the scales will be
Distance 20 km $=$ 1 cm and Time 30 min $=$ 1 cm
(i) The difference between the highest and lowest values of each quantity.
(ii) The intermediate values of each quantity, so that with the scale chosen, it is easy to mark the values on the graph.
(iii) To utilise the maximum part of the paper on which the graph is to be drawn, assume that we have a graph paper of size 25 cm $\times$ 25 cm and we have to accommodate following data
| Time | Odometer readings | Distance from the starting point |
| 8:00 AM | 36540 km | 0 km |
| 8:30 AM | 36560 km | 20 km |
| 9:00 AM | 36580 km | 40 km |
| 9:30 AM | 36600 km | 60 km |
| 10:00 AM | 36620 km | 80 km |
Distance 20 km $=$ 1 cm and Time 30 min $=$ 1 cm
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