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Data Handling Test - 4

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Data Handling Test - 4
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  • Question 1
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    The mean of 5 numbers is 20. If one number is excluded, mean of the remaining numbers becomes 23, then the excluded number is ____. 

    Solution

    Let the excluded number be x. Sum of 5 numbers =20×5=100 After excluding x, Sum of 4 numbers =4×23=92. ∴  x=100−92 ⇒ x=8

     

  • Question 2
    1 / -0

    The average weight of a sample of 10 apples is 52g. Later it was found that the weighing machine had shown the weight of each apple 10g less. What is the correct average weight of an apple?

  • Question 3
    1 / -0

    Which of the following statements is INCORRECT?

    Solution

    Option (c) is incorrect because the mean of the data may or may not be from the given data

     

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