compare vs. in comoparison to each other

< Previous | Next >

Swarovski

Member
Chinese - Mandarine
I wrote Setence 1 but was asked to add the phrase "in comparison to each other" as in Sentence 2. I don't understand why. Could someone help explain it? How about Sentence 3?

1. The statistics were calculated to compare learner perceptionson the helpfulness of Materials A and that of the Materials B.

2. The statistics were calculated to compare learner perceptionson the helpfulness of Materials A and that of the Materials B in comparison to each other.

3. The statistics were calculated to examine learner perceptionson the helpfulness of Materials A and that of the Materials B in comparison to each other.

Any input would be much appreciated.
 
  • Florentia52

    Modwoman in the attic
    English - United States
    All three sentences are cumbersome and incorrect. Even once you separate "perceptions on," "on" is the wrong preposition.

    I would be more likely to say "The statistics were calculated to compare learner perceptions of the helpfulness of Materials A to (or "with") that of Materials B."
     
    < Previous | Next >
    Top