Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th
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Answer :

(i) Frequency distribution table  (ii) From the above frequency distribution table, we observe that number of children in the class - interval 15 - 20 is 2. So, 2 children view television for 15 hours or more than 15 hours a week .   
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Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Description : Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows : -Maths 9th

Last Answer : (i) Frequency distribution table (ii) From the above frequency distribution table, we observe that number of children in the class - interval 15 - 20 is 2. So, 2 children view television for 15 hours or more than 15 hours a week .

Thirty children were asked about the number -Maths 9th

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Last Answer : The frequency distribution of above data in tabular form is given as: (ii) Two children watched television for 15 or more hours a week.

Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table : -Maths 9th

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Last Answer : Total number of books = 700 (i) P(no defective books) = 400 / 700 = 4 / 7 (ii) P(more than 0 but less than 4 defective books) = 269 / 700 (iii) P(more than 4 defective books) = 13 / 700

Books are packed in piles each containing 20 books. Thirty five piles were examined for defective books and the results are given in the following table : -Maths 9th

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Last Answer : Total number of books = 700 (i) P(no defective books) = 400 / 700 = 4 / 7 (ii) P(more than 0 but less than 4 defective books) = 269 / 700 (iii) P(more than 4 defective books) = 13 / 700

30 children were asked about the number of hours -Maths 9th

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Last Answer : No, the number of children who watched TV for 10 or more hours a week is 4 + 2, i.e., 6 .

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According to school authorities Options: A) Children should be allowed complete freedom of choice in viewing TV B) Community leaders have a responsibility for influencing television standards C) All TV programmes have a dangerous effect upon young children D) Children should never be permitted to choose the TV programmes they view

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Last Answer : NEED ANSWER

The class marks of a frequency distribution are given as follows 15, 20, 25, …. The class corresponding to the class mark 20 is -Maths 9th

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The frequency distribution has been represented graphically as follows. -Maths 9th

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The blood groups of 30 students of class VIII are recorded as follows: -Maths 9th

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