#77 - Conditional Aggregation

Problem description & analysis:

Here below is a data table:

Task: Count the following information for each class: the number of students with scores above 90, the number of failed students, and the average score after removing the highest and lowest scores.

Solution:

Use SPL XLL and the code is as follows:

=spl("=E(?1).group(Class).new(Class,~.count(Score>=90):'ScoreAbove90',~.count(Score<60):Failed,~.sort(Score).m(2:-2).avg(Score):AverageScore)", A1:C19)

where m(2:-2) represents the set of members from the second to penultimate member of a sequence.

The results are shown below:

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