Calculating with time series

The AllThatStats calculator allows various operations to support your modelling -> ATS tutorial

Standard operations by time series (addition, subtraction, division, multiplication)

For instance, to build an index on Brazil’s GDP, base year 2010:

    - search for Brazil’s GDP 
    - copy the 2010 value 
    - change to the calculator menu 
    - find the formula generator, the one which shows Brazil’s GDP identifier already… 
    - divide it by the base year as stored in your clipboard (don’t forget to add the “/” first) 
    - and finally, multiply the formula by 100 to build the index number…

Statistical values

For any single time series some general statistical figures are calculated automatically:

    - the minimum and maximum value
    - the mean  
    - the standard deviation  
    - the co-variance

Ref. the above example: simply click to the corresponding icon beside the new calculated “Brazil GDP index number” series.

General transformations

The calculator also provides a powerful transformation tool which comes with a number of predefined hard wired functions:

    - lag  
    - moving average  
    - interpolation of missing values  
    - forecast  

and formulas:

    - for calculating the difference per time series selected (t-(t-1)) and   
    - the rate of change (t/t-1): compounded or continuously compounded