Statistics tell us the mathematical trends regarding many different issues. You see statistics in research in every field of industry including medicine, psychology, technology, and business. Perhaps you are in an industry that uses statistics in a significant way. You may even do your own research to apply for grants or other reasons. Sometimes it is important to know how to calculate percentiles in statistics for your own research.


1. Percentiles deal with the median or the "relative standing" in a group.

When we speak about percentiles, we are talking about the ranking that someone has based on certain scores or percentages. It is, simply put, your relative standing in a norm group. For example, if you score in the 98th percentile, this means that you did as well or better than 98 percent of the people who took a particular test. This is an excellent score. If you scored in the 50th percentile, it means you are in the middle of the distribution, and you only did as well or better than 50 percent of the people who took the test. By figuring your percentile rank, you can figure out where a statistic stands relative to others. This is an important aspect of reporting statistical data.


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