What are the best practices for using percentiles in data analysis?
When using percentiles, ensure you have a clear understanding of your data distribution and context.
Can you explain how to calculate percentiles?
To calculate a percentile, sort your data in ascending order and use the formula: P = (n * k) / 100, where P is the position, n is the number of data points, and k is the desired percentile.
What are some common mistakes to avoid when using percentiles?
Common mistakes include misinterpreting percentiles, using them with small sample sizes, and not considering the data distribution.
How can percentiles be used in educational assessments?
In educational assessments, percentiles can help compare student performance against a national or local benchmark.
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