I have a data set of monthly(Jan-Dec) mean of rainfall from the year 1901 to 2000, I want to convert this data set in to time series data for ARIMA modelling in R
You may want to consider using ts (https://www.rdocumentation.org/packages/stats/versions/3.6.1/topics/ts) function from the stats package. Following two tutorials use ts type data to fit different models including ARIMA.
A average rainfall data was recorded in a series of year suppose from 1951 to 2014. in this data set there are two column one is average rainfall for the year 19951 to 2014 and second row is time that is year 1951--------2017. Is this data set consider as a time series data and can I do ARIMA modelling on this data set.
Consider the following code. It creates a time series of average rainfall from 1951 to 2014 and fits an ARIMA model. Then it plots the forecast for the next 15 years.