is there any other tool for calculating sample size?
You have to consider the population as an infinite one.
You can use Cochran's rule if the population is unknown.
I really like GPower for such calculations:
https://www.psychologie.hhu.de/arbeitsgruppen/allgemeine-psychologie-und-arbeitspsychologie/gpower
However, if you are employing large-scale techniques such as stratification, clustering aso., there might be better tools around.
Use G-power.
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Pls share your thoughts
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