A sampling interval of 5 (selecting every fifth unit) was used to select a sample from a population of 1000. how many elements are to be in the sample?

The sampling interval is the frequency with which data is collected. The sampling interval is computed by the division of the total population size by the required sample size.

So, from the information given:

The total population N = 1000
The sampling interval (i) = 5

The elements that are required to be in the sample i.e. the sample size (n) can be computed by using the formula:

[tex]\mathbf{i = \dfrac{N}{n}}[/tex]

[tex]\mathbf{ n= \dfrac{N}{i}}[/tex]

[tex]\mathbf{ n= \dfrac{1000}{5}}[/tex]

n = 200 elements.

Therefore, we can conclude that 200 elements are required to be in the sample.

Learn more about sampling intervals here:

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