Read a double bar graph using its scale, and draw one from raw data with a sensible scale and a legend.
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Put two column graphs side by side to compare month by month.
The onion prices of Yahapur and Wahapur can be drawn as two separate column graphs. Or we can combine them: draw each month's two bars side by side.
Using the scale to compare months.
Problem. Use the double bar graph to compare onion prices month by month. (Textbook p. 115)
Questions on the onion double bar graph.
What is the scale of the onion graph?
Tally, choose a scale, draw pairs of bars, add a legend.
Tallying two grades' answers and graphing them.
Problem. Preyashi asked her students: 'If you could become aquatic (w), aerial (a) or spaceborne (s), which would you choose?' Some chose none (n). Draw a double bar graph comparing the two grades. (Textbook p. 124, Q2)
Grade 5: w, a, a, a, w, n, s, a, n, w, a, a, a, a, a, w, w, s, a, a, n, w, a, a, n
Grade 9: n, w, s, a, s, w, s, s, a, a, w, s, s, a, s, a, n, w, s, s, a, w, a, w, a
Draw a double bar graph and guess the months.
Figure it Out, Textbook p. 124, Q3. Temperatures over two days in Jodhpur, Rajasthan, in different months:
| | 12 am | 3 am | 6 am | 9 am | 12 pm | 3 pm | 6 pm | 9 pm | |---|---|---|---|---|---|---|---|---| | Day 1 | 20°C | 18°C | 16°C | 20°C | 26°C | 34°C | 30°C | 24°C | | Day 2 | 37°C | 34°C | 30°C | 33°C | 37°C | 43°C | 42°C | 39°C |
Draw a double bar graph on paper using 1 unit = 4°C. Then answer below.
Use 1 unit = 4°C.
Look at the bars.
Think about Rajasthan's seasons.