Business Statistics And Research Methods - Study Mode

[#436] Time series displays
Correct Answer

(C) Direction, weather, cyclic and irregular changes

[#437] A researcher wants to test the significance of the difference between the average performance of the two small sized samples when the information of the population standard deviation is not available, which one of the following hypothesis-testing is suitably used?
Correct Answer

(D) T-test
(H) t-test

[#438] The standard deviation is independent of:
Correct Answer

(A) Change of origin

[#439] If the dependent variable increases as the independent variable increases in an estimating equation, the coefficient of correlation will be inthe range:
Correct Answer

(D) 0 to 1

[#440] Where r is zero the regression lines but each other making an angle of
Correct Answer

(D) None of them