Graphical Representation of Data — Important Questions
Madhya Pradesh Board · Class 12 · Geography
58 important questions from Graphical Representation of Data for Madhya Pradesh Board Class 12 Geography, with answers. Written for the board exams 2027.
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Important Questions from Graphical Representation of Data
A choropleth map shows data values 12, 27, 33, 40, and 57. Find the range and then the class interval for five categories.
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Range 45, interval 9
Maximum value = 57 and minimum value = 12. Range = 57 – 12 = 45. Class interval = Range/5 = 45/5 = 9. So the correct pair is range 45 and interval 9.
In a dot map, 1 dot represents 100,000 people. A state has a population of 4,86,52,247. Find the number of dots after rounding as required.
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487
Divide the population by 100,000: 4,86,52,247 ÷ 100,000 = 486.52247. Since the fraction is more than 0.5, round to 487. The correct number of dots is 487.
A flow map uses a scale of 1 cm = 50 trains. Find the strip thickness for 30 trains and for 12 trains.
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6 mm and 2.4 mm
If 50 trains = 1 cm, then 30 trains = 30/50 cm = 0.6 cm = 6 mm. Also, 12 trains = 12/50 cm = 0.24 cm = 2.4 mm. The correct strip thicknesses are 6 mm and 2.4 mm.
Two stations on an isopleth map are 1 cm apart and their values are 28 and 33. Find the point of Isopleth for value 30 using the given formula.
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0.4 cm from 28
Use Point of Isopleth = (Distance between two points in cm / Difference between the two values of corresponding points) × Interval. Here, distance = 1 cm, difference = 33 – 28 = 5, interval from 28 to 30 = 2. So, point = (1/5) × 2 = 0.4 cm from 28. The correct point is 0.4 cm from 28.
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