$30$ children were asked about the number of hours they watched $TV$ programmes last week. The results are recorded as under:
Number of hours $0-5$ $5-10$ $10-15$ $15-20$
Frequency $8$ $16$ $4$ $2$

Can we say that the number of children who watched $TV$ for $10$ or more hours a week is $22$? Justify your answer.

  • A
    Yes
  • B
    No
  • C
    Cannot be determined
  • D
    None of these

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