Barbara is tiling her craft room with square tiles. she wants 6/10 of the square tiles to be red. if she uses 18 red tiles how mane square tiles will be used to cover the floor? draw an area model to solve

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above