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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.

For project (i), daily 24-hour activities across three members are mapped into lying, sitting and moving. Plotting these consecutive durations builds a stacked bar chart showing each person’s total routine. Class 9 maths Chapter 10 How Quantities Combine Understanding Data solutions

cbse class 9 maths ganita manjari part 2 solutionsclass 9 maths ganita manjari part 2 chapter 10 question answercollect expense data for at least 3 monthsganita manjari part 2 chapter 10 how quantities combine understanding data solutionsidentify the expense categories in your family budgetwrite your observations and inferences based on the chart