Random sample — estimating the population
Random sample — estimating the population
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Use the random sample to estimate the count in the whole population.
A school has 500 students. In a random sample of 50 students, 12 wear glasses. About how many students in the whole school wear glasses?
What does the generator do?
The generator alternates between three short scenarios — glasses at school, bikes in town, dogs in the neighbourhood. It picks a sample size (20, 25, 40 or 50), a clean population size that is a multiple of the sample, and a count of the trait that gives a whole-number estimate.
How to solve
Find the fraction in the sample: trait / sample. Apply the same fraction to the whole population: multiply by the population size. Estimates are not exact — they are best guesses based on the sample.
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