22/Jan Math RECALL-Best gmat prep 2022(8)

WHAT IS RECALL?

RECALL is real exam questions according to latest examinee’s recall (REQALER).

What is there in the first two sets? 2 2 3 3 3 5 The average is 3.5, and the standard deviation is about 2.5. The second set is one or two more than the first. The mean does not seem to have changed, ask the standard The difference is closest to which I calculated directly and roughly, the closest to 2