Question detail
A population of a town increased from 20,000 to 25,000 over a year. Calculate the percentage increase in the population.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Statistical skills
Question
A population of a town increased from 20,000 to 25,000 over a year. Calculate the percentage increase in the population.
Answer
25%
Explanation
The answer is strong because it accurately reflects the calculation of percentage increase, which is a key statistical skill. The question tests the ability to apply the percentage increase formula effectively.
Common mistake
Confusing absolute change with percentage change
Students often add or subtract the raw change to the original value instead of dividing by the original value and multiplying by 100 to find the percentage change
To calculate percentage increase or decrease, first find the absolute change (new value minus old value), then divide that change by the original value, and finally multiply by 100 to express it as a percentage.
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