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Question

Consider the following for the two items that follow: The sum and the sum of squares of the observations corresponding to length X (in cm) and weight Y (in gm) of 50 tropical tubers are given as ΣX = 200, ΣY = 250, ΣX² = 900 and ΣY² = 1400.

Which one of the following statements is correct?

This question was previously asked in
NDA 2 2025 GAT Question Paper (14-Sep-2025)
The correct answer is

Coefficient of variation cannot be determined from the given data.

We cannot determine the coefficient of variation of X or Y because we do not have the standard deviations.

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Similar Questions

  1. What is \(\sum_{i=1}^n x_i f_i\) equal to ?
  2. What is the mean of the distribution ?
  3. What is the mean deviation of the largest five observations ?
  4. What is the variance of the largest five observations ?
  5. Which one of the following is correct?

  6. What is the total number of students whose height is less than or equal to 165 cm?

  7. What is the median height of the class?

  8. The height which occurs most frequently in the class is

  9. The most appropriate graphical representation of the given frequency distribution is

  10. What is the value of \(n\) ?

Important Questions from Statistics

  1. If the value of x is taken as 25 and a pie chart is drawn, what will be the central angle of the field showing the number of students who got marks in the interval 30-40?

  2. If the mean marks of the students is 27.5, then what is the value of x?

  3. Match the following:

    (a) Marginalist Revolution(i) Samuelson
    (b) Multiplier-Accelerator model(ii) J. R. Hicks
    (c) IS-LM curves(iii) Jevous
    (d) Real Business Cycle(iv) Robert J. Borro

    Choose the correct option from those given below:

  4. As per the SRS Bulletin of September 2017, the estimated death rate for Kerala is 7.6, while for Bihar it is 6. From these data which is the correct inference to draw?

  5. Arrange the following States in descending order according to Maternal Mortality Ratio (MMR) as per the Special Bulletin of SRS, May, 2018:

    (i) Assam

    (ii) Bihar

    (iii) Madhya Pradesh

    (iv) Uttar Pradesh

    Choose the correct answer from the code given below :

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