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📊 Chapter 10: How Quantities Combine: Understanding Data • Exercise Set 10.5

Verified step-by-step solutions for your class notes.

Q1

The smart watch data of 5 people...
(i) How much time does Sahana spend per day? (Guess)
(ii) Guess what activity Julie could be engaged in.
(iii) Complete the chart.

Answer:
(i) Total hours must be 24. A student might spend: Lying down = 8h, Sitting = 10h, Standing = 6h.
(ii) The bar for Julie shows ~33% lying down (8h), ~42% sitting (10h), and ~25% standing (6h). This pattern fits an office worker, a student, or a software engineer.
(iii) Chart completion representing the body states:

Pavani Raghu Zakir Sahana Julie Lying down Sitting Standing/Moving