Business Statistics

A. 1, 2 and 3

B. 1, 3 and 4

C. Both 2 and 4

D. 2, 3 and 4

A. F - distribution

B. t - distribution

C. normally distribution

D. X² - distribution

A. $$\overline X = \sqrt {npq} $$

B. $$\overline X = np$$

C. $$\overline X = \frac{{n - 1}}{p}$$

D. $$\overline X = \frac{{p - 1}}{q}$$

A. All the input is processed and controlled

B. The access to the data files is protected and secured through an authorisation scheme

C. All updating and corrections are completed before the data processing begins

D. All of the above

A. $$\sigma = \sqrt {npq} $$   in case of calculating $$\sigma $$ of numbers

B. $$\sigma = \sqrt {\frac{{pq}}{n}} $$   in case of calculating $$\sigma $$ of proportion

C. Both A and B

D. None of the above

A. Installation and operation of the system

B. Development of the system

C. Definition of the system and its objective

D. All of the above

A. Both statements are correct

B. Both statements are incorrect

C. Statement I is correct, while Statement II is incorrect

D. Statement I is incorrect, while Statement II is correct

A. Production planning and control

B. Planning and control

C. Business forecasting

D. All of the above

A. Both statements are correct

B. Both statements are incorrect

C. Statement I is correct, while Statement II is incorrect

D. Statement I is incorrect, while Statement II is correct

A. When both the variables X and Y are measured on an interval or ratio scale, Karl Pearson's coefficient of correlation is most appropriate

B. The probable error of coefficient of correlation is $$\frac{{\sigma p}}{{\sqrt n }}$$

C. If the sign of two regression coefficient (Y on X) and (X on Y) is negative, the sign of correlation coefficient is positive

D. If one of the regression coefficient is greater than one, the other regression coefficient must also be greater than one