Uses of Time Series Analysis

The following table shows the index of industrial production for the period from 1976 to 1985, using the year 1976 as the base year.

Fit a trend line to the above data by graphical method.

The following table gives the production of steel (in millions of tonnes) for years 1976 to 1986.

Fit a trend line to the above data by the graphical method.

Choose the correct alternative :

Time-series analysis is based on the assumption that _______.

Fill in the blank :

The graph of time series clearly shows _______of it is monotone.

The following data gives the production of bleaching powder (in '000 tons) for the years 1962 to 1972.

Fit a trend line by graphical method to the above data.

Choose the correct alternative :

The first step in time series analysis is to _______.