Floating point errors:

[ 7.6, 1.15, 8.06, 6.02, 6.27, 1.1 ]
Random test for median failed - Expected: 6.15, instead got: 6.14

Description should be language-agnostic

Also, The global array in ruby should be $league_table

Inconsistency among languages:

• JS did not expect solvers to modify original array whereas Python & Ruby require input modification (Either modify JS or change the requirements of the kata to not modify aray)

• No random tests in JS

• Node 14. should be enabled

Ruby 3.0 should be enabled, see this to learn how to do it

• Python new test framework should be used (Refer this & this for more detail)

• Ruby 3.0 should be enabled (Refer this & this for more detail)

Ruby :

• the table should be a hash

I disagree with the results of the first test. One quarter of the way through an array of 7 elements would be 7/4 or 1 3/4. That would place the first quarter cutoff between the first and second elements of the array (indices 0 and 1). So the values at those two indices should be averaged to produce the result, according to your instructions. There is a similar problem with the 3/4 test.