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Statistics Test - 38
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Statistics Test - 38
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  • Question 1/10
    4 / -1

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  • Question 2/10
    4 / -1

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  • Question 3/10
    4 / -1
    Mean of 100 observations in 45. It was later found that two observations 19 and 31 were incorrectly recorded as 91 and 13. The correct mean is
    Solutions

  • Question 4/10
    4 / -1

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  • Question 5/10
    4 / -1

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  • Question 6/10
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  • Question 7/10
    4 / -1
    The mean and S.D. of the marks of 200 candidates were found to be 40 and 15 respectively. Later, it was discovered that a score of 40 was wrongly read as 50. The correct mean and S.D. respectively are
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  • Question 8/10
    4 / -1

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  • Question 9/10
    4 / -1
    In a series of 2n observations, half of them equal to a and remaining half equal to –a. If the standard deviation of the observations is 2, then |a| equals
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  • Question 10/10
    4 / -1

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