If the arithmetic mean is 26.8 and the median is 27.9, then the mode is :
Consider the following time series data :
Fitting a straight-line, is the trend value for the year 1992 is :
Let A and B be the two possible outcomes of an experiment and suppose P(A) = 0.4, P(A U B) = 0.7 and P(B) = p, for what choice of p, A and B independent?
In multiplicative model of time series: Xt= Tt x St x Ct x It, where Tt , St , Ct , It are trend, seasonal, cyclical and irregular components, what can be said about the values of It?
For four observations 1, 0, 1, 4, the measure of kurtosis equals
To remove quadratic trend from an additive time series, differencing :
