Irregular variation in a time series are not caused by :

Given $\sum p_0 q_0 = 800$, $\sum p_0 q_1 = 1500$, $\sum p_1 q_1 = 1300$ and $\sum p_1 q_0 = 900$, where subscripts 0 and 1 are used for base year and current year respectively. The Paasche's index number is:

If Paasche's index number is 160 and Laspeyre's index number is 250, then Fisher's index number is :

For the given five values, 17, 25, 21, 35, 43, the three-year moving averages are:

The prices and the quantities of three commodities are given are :

The Laspeyre's price index number for year 2009 with year 2006 as base is 200. The value of $x$ is :

The rise in prices before Christmas is an example of

Which of the following statements are correct ?

(A) Index number are free from units

(B) Index number represents specialised averages in percentage

(C) $P_{01} = \frac{\Sigma P_0}{\Sigma P_1} \times 100$

(D) Index numbers are helpful in formulating and adopting appropriate economic policies

Choose the correct answer from the options given below :