Business Statistics and Research Methods MCQs

In the regression equation Y = a + b X, a is called:

To show the trend for a variable, which one of the presentation method is used?

Which one of the following is a relative measures of dispersion?

Which one of the following formulas is used to calculate probable error of correlation coefficient between two variables of $$'n'$$ pairs of observations?

Central statistical organization was established:

Which one of these sampling methods is a probability method that seems to be objective, accurate and unbiased?

Assertion (A): If regression coefficient of X on Y is greater than one, regression coefficient of Y on X must be less than one. Reason (R): The geometric mean between two regression coefficients is the co-efficient of correlation. On the basis of the above, choose the appropriate answer :

In the case of classification of data, the class having its upper limit is treated as the lower limit of its next class is called

Which of the following statements relating to the sampling theory are correct? 1. The values of the statistical measures based on the sampled units are called values of statistics. 2. In the simple random sampling technique, the element of the population and the unit of the sample are different. 3. Snow-ball sampling technique is a probability based sampling technique. 4. The 'law of statistical regularity' and the 'law of inertia of large numbers' are the main bases of the sample to become representative of the population. Choose the correct answer: