I’m not quite sure what question you are asking, but I note Wellesley has a pretty high yield–in the last CDS, they admitted 1152, and 585 enrolled, so that is about 50.7%. For comparison, Williams was 577/1302 (44.3%), Amherst 467/1079 (43.2%), Smith 619/1662 (37.2%), Holy Cross 903/2558 (35.3%), Mount Holyoke 544/1946 (28.0%) . . . .
Point being the Massachusetts LAC market is rather competitive (to put it mildly), but Wellesley actually does really well with yield given that context. Others can probably elaborate more meaningfully, but my sense is Wellesley is basically perceived by many women as the “best” women’s LAC. And that means it can have a lower admit rate for a women’s LAC.
But of course it gets fewer applications than the top Northeast co-ed LACs, and also Barnard which is in NYC and associated with Columbia. So it has a higher admit rate than those, but not like twice as much, because of its great positioning within its market segment.