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    Consider the following statements :

    I. Correlation is the degree of association between 2 variables

    II. Correlation is represented in terms of a coefficient

    III. If the coefficient is positive, the variables are not associated

    IV. If the coefficient is negative the variables are associated

    Of the statements :

  • I alone is correct
  • I and II are correct
  • I, II and III are correct
  • all are correct