@joh_pot you might want to add your reason in the description.

I agree with you, and don't understand the id 4 result

Fixed

Thank you for your comment. Will fix it.

But the text explained that the solution is the mean (so 6 is right), but you're right, the sum should be in brackets (7+5+7)/3=6

Just added this. Thanks a lot for your comment!

https://en.wikipedia.org/wiki/Side_effect_(computer_science)

Same to me, when I looked into solutions, I've found exatcly same query as mine, but still get error in Rows test case, here it is:
Rows should have 63 rows (1 Passed, 0 Failed) should should return the expected results ✘ expected true to respond totrue?or perhaps you meant "be true" or "be_truthy"
Also had the same situation in 2 other katas from this author

same thing here. Guess their test is not working as expected. I think this should be labeled as Issue.The problem is the last test

Rows

should have 48 rows (1 Passed, 0 Failed)

should should return the expected results

✘ expected true to respond to true? or perhaps you meant be true or be_truthy

I tried some of the accepted solutions and I get the same error

all but 4 tests are auto generated you're going to have to be more specific.

all but 3 tests are auto generated, you're going to have to be more specific.

Fixed -> Issue closed

row number Fixed. If you prefer description in spanish fine by me

again about reserving the tag issue for kata breaking issues...

I'll make the change but this will invalidate all solutions.