In the equation of trend line $y_t = a + bx$, a and b represent :

For a given data of 5 observation $\sum y = 311$, $\sum x^2 = 10$ and $\sum xy = 90$. The equation of the trend line is :

Using simple average of relatives method, the price index for 2011, taking 2001 as base year, was found to be 127. If $\Sigma p_0 = 263$, then x and y from the following data are :

The price relatives and weights of a set of commodities are given as:

If the sum of weights is 30 and the index for the set is 144, then the values of $x$ and $y$ are:

Match List - I with List - II.

Given that $\Sigma p_0 q_0 = 150$, $\Sigma p_0 q_1 = 80$, $\Sigma p_1 q_0 = 240$, $\Sigma p_1 q_1 = 200$.

Choose the correct answer from the options given below :

Given the data for the sales of a product in a state is as follows:

The equation of the straight-line trend by method of least squares is:

Match the LIST-I with LIST-II

Choose the correct answer from the options given below: