Neco Model Questions Vol1 2025 Agricultural Science Question 15
Practice objective / multiple choice question 15 from the 2025 Neco Model Questions Vol1 Agricultural Science examination.
In a field survey four plant species were recorded with the following individual counts: Species A - 20, Species B - 30, Species C - 25, Species D - 25. Using Simpson's diversity index \(D = \frac{\sum n_i (n_i-1)}{N(N-1)}\), where \(N\) is the total number of individuals, calculate the index value (to three decimal places).
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This is Neco Model Questions Vol1 2025 Agricultural Science Question 15. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Agricultural Science examination.
Difficulty level: Easy .
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