that's "fairly," which is pretty average by the way "quite" is closer to "very" quite 3 : to a considerable extent : PRETTY, RATHER <quite near> <quite ill> <quite rich> fairly 4 : TOLERABLY, MODERATELY, RATHER <a fairly difficult scientific text> <a fairly steady diet of lamb and beef> : moderately well <how are you getting along? Only fairly>
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MrPedanticI think it depends on the intonation, in British English. With a confident intonation, "That's quite good!" can mean "that's surprisingly good!". With a hesitant intonation – "That's quite good" – it can mean "fairly good".It's the same in NAmE (North American English).
(The same applies to "pretty".)
MrP