It is important that there is a cause which leads to an effect over a particular thing if we have to study the cause and effect relationship.
Explanation:
There are three criteria that must be met to build up a cause effect relationship: The reason must happen before the impact. At whatever point the reason happens, the impact should likewise happen. There must not be another factor that can clarify the connection between the circumstances and logical results.
To decide causality, it is imperative to watch variety in the variable accepted to cause the adjustment in the different variable(s), and afterward measure the adjustments in the different variable(s).
