Individual project: Do at least one of the following. (i) Recall the previous day and fill in the approximate time spent lying down, sitting and standing/moving around, etc. Ask at least 2 of your family members about their day and fill it in. Alternatively, you can choose to track just your own body-state for any one of the weekdays, Saturday and Sunday. Visualise it using a stacked bar chart. Discuss with your class how you arrived at the estimated time spent in each state. (ii) Visualise your family’s monthly expenditure using a 100% stacked bar chart. (a) First, identify the expense categories in your family budget. (b) Discuss with your family members to decide how you will collect and organise the data. (c) Collect expense data for at least 3 months. (d) Represent the data in a 100% stacked bar chart, with each bar showing how the total monthly expenditure is divided across the different categories. (e) Finally, write your observations and inferences based on the chart.
Choosing project (i), track daily 24-hour routines across three individuals: for instance, recording 8 hours lying, 10 hours sitting and 6 hours moving. In a stacked bar chart, represent each person along one axis while stacking their category hours sequentially up to 24 hours. This clearly illustrates both individual lifestyle differences and the fixed daily total for each family member.
For more NCERT Solutions of Class 9 Maths Ganita Manjari Part 2 Chapter 10 How Quantities Combine Understanding Data Question Answer (2026-27)
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