If the trend line with 2008 as origin is Y= 20.6 + 1.68X, then the trend line with 2004 as origin is :
If A1 , A2 and A3 are three independent events with P(A1 ) = 1/3, P(A2 ) = 1/4 and P(A3 ) = 2/5, then the probability that exactly one of the events occurs is :
If the annual trend of production (Y) of a certain commodity in a factory with origin 2,000 and X unit = one year is Y= 148.8 + 7.2X Then the monthly trend equation is :
Based on results of 2 way ANOVA, the SSE was computed to be 139.4. If we ignore one of the factors and perform one way ANOVA using the same data, SSE will :
In a class, there are 25 students whose average age decreases by 3 months when one student aged 22 years is replaced by a new student. The age of the new student is :
Ratio to trend method for seasonal indices provide good results if: