Business Statistics And Research Methods - Study Mode

[#1016] Assertion (A): When there is an evidence of a linear relationship between two variables, it may not always mean an independent-dependent relationship between the two variables. Reason (R): The casual relationship between the two variables may not imply a reasonable theoretical relationship between the two.
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(A) Both (A) and (R) are true and (R) is the correct explanation of (A)

[#1017] If there are 8 possible classes under consideration for a goodness of fit, the number of degrees of freedom will be
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(D) Cannot be determined from the given information

[#1018] If the correlation coefficientis a positive value, then the slope of the regression line:
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(A) Must also be positive

[#1019] In an exclusive class
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(D) The upper class limit are excluded

[#1020] The probable error of the coefficient of correlation(r) is calculated by which one of the following formula?
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(B) $$0.6745frac{{left( {1 - {r^2}} ight)}}{{sqrt n }}$$