For two equally likely, exhaustive and independent events A and B, P(A ∩ B) is :
In a multiplicative time series model, the seasonal indices computed by the ratiototrend method
Following histogram shows certain frequency distribution against class intervals.
Fill up the blank: The secular trend is the part of time points where more or less regular and _______ is observed showing either the tendency of growth or decline.
Demand for seats in a university is at its highest in the fall; demand also trends to grow and fall off in 25 year waves. In time service forecasting, the former demand characteristic would be called_______ and the latter would be called ___________.
A closet contains 8 pairs of shoes. If 4 shoes are chosen at random, then the probability that all the four shoes are of the same type (left or right) is :