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Data Handling

Short Answer Type

71. What is the number of students of Class VIII whose marks obtained in an examination are expressed in the following frequency distribution.

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Long Answer Type

72. The marks scored by 20 students in a test are given below:
84, 57, 53, 89, 41, 57, 47, 64, 58, 44, 53, 72, 51, 78, 71, 62, 56, 68, 54, 42

Complete the following frequency table:

(i) What is the upper limit of 40–50?
(ii) What is the upper limit of 70–80?
(iii) What is the class size?

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Short Answer Type

73. Number of workshops organized by a school in different areas during the last six years are as follows:

Draw a histogram representing the data.

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74. Draw a histogram for the daily earnings of 30 general stores given in the following table:

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75. The number of students admitted in different faculties of a college are given below:

Represent the above information by a pie-chart.

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76. Draw a pie-chart for the following data of expenditure on various items in a family.

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Long Answer Type

77. The following pie-chart represents the marks scored by a student. If he obtained 540 as total marks, answer the following questions:

(i) In which subject did the student score 120 marks?
(ii) What is the difference in the marks obtained in Maths and English?
(iii) In which subject did he get minimum marks?

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78.

A die is thrown. What is the probability of getting:
(i) an even number?
(ii) an odd number?
(iii) A number between 3 and 6?

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Short Answer Type

79. What is the probability of a number selected from the numbers 1, 2, 3, ..... 20 such that it is a prime number?

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80. A bag contains 3 blue and 2 red balls. A ball is drawn at random. What is the probability of drawing a red ball?

Solution not provided.
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