# FAQ: The Data Science Process - Determine the Necessary Data

This community-built FAQ covers the “Determine the Necessary Data” exercise from the lesson “The Data Science Process”.

Paths and Courses
This exercise can be found in the following Codecademy content:

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How are sample size calculators vetted?

The calculator works in the reverse of the question. It can’t answer it.

Population size: 418
Sample size: 357

How does the sample size go from 132 → 357 → 381
When the population change goes from 200 → 5,000 → 50,000?
This doesn’t make any sense to me.
I would assume a much larger increase relative to population size.

1 Like

hi
the population size in the first que can be 414 to 418, this result is showed by the calculator in this question