LOS - Calculate v. Explain

In the first CFAI mock exam (AM section), a question asks to calculated weighted harmonic mean. The LOS for this section, however, only asks the candidate to “explain on the use.” What gives?

I have the same question. Do I miss something?

The above person refers to the CFA Level II Mock exam provided by the CFAI.

Explain and calculate can be synonyms . . . in the CFA world, anyway.

I wrote a guide to CFA Institute’s command words (primarily for Level III candidates, to help them understand how to answer questions on the morning session exam) that covers similarities such as these.