:No, her text book has presumably defined Percentile # Definition of the Nearest Rank method.
2.
What are the 25th, 50th, 75th and 100th percentiles of this list using the Nearest Rank method?
3.
:: : If this was on a test with 68 as the correct answer then I suspect she has at some time been taught Percentile # Definition of the Nearest Rank method, or something equivalent.
4.
There are a number of techniques to compare the performance of reduced-rank methods and estimated direct methods to clairvoyant STAP ( direct with perfect knowledge of interference covariance matrix and target steering vector ), mostly based around SINR loss.
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