The smart watch data of 5 people was tracked from Monday to Friday. The recorded data tells us how many hours each person spent lying down, sitting, and standing or moving around, etc., as shown in the following table.
| Person | Lying down | Sitting | Standing or Moving around etc. |
|---|---|---|---|
| Pavani (Patient) | 20 | 3 | 1 |
| Raghu (Nurse) | 7 | 4 | 13 |
| Zakir (Teacher) | 8 | 6 | 10 |
| Sahana (Student) | |||
| Julie (________) | 8 | 10 | 6 |
- (i)How much time does Sahana spend per day in each of these body-states? Make a reasonable guess and fill her row in the table.
- (ii)Guess what activity or work Julie could be engaged in based on the data. Find out what your classmates' guesses are.
- (iii)Complete the chart below based on the tabular data.
A day has 24 hours. One reasonable estimate for Sahana is:
Lying down + Sitting + Standing/moving = 24
Standing/moving = 24 − (8 + 9) = 7 hours
| Person | Lying down | Sitting | Standing or moving around |
|---|---|---|---|
| --- | ---: | ---: | ---: |
| Sahana (Student) | 8 hours | 9 hours | 7 hours |
Other reasonable estimates are also possible, provided the total is 24 hours.
Julie spends 8 hours lying down, 10 hours sitting, and 6 hours standing or moving around.
Since Julie spends a large part of the day sitting, she could be an office worker whose job involves sitting for long periods.
Other guesses are possible because the table does not tell us Julie's actual occupation.
The given chart is a 100% stacked bar chart. Each person's total time of 24 hours is represented by 100%.
The percentage of time spent on an activity is calculated as:
Percentage of time = (Hours spent on the activity / 24) × 100
Lying down:
Sitting:
Standing or moving around:
The cumulative boundaries for drawing Sahana's bar are:
The three segments together represent 100% of Sahana's day.
