Confused about scout's real name and sex in to kill a mocking bird?

hi! i've just started reading and i'm a bit confused, at first i thought scout and jem had a younger sister called Alexandra but now it seems scout is a girl called Jean Louise? and i thought scout was a boy so i'm a bit lost, what's scout's real name, is he a boy or girl and who is... show more hi! i've just started reading and i'm a bit confused, at first i thought scout and jem had a younger sister called Alexandra but now it seems scout is a girl called Jean Louise? and i thought scout was a boy

so i'm a bit lost, what's scout's real name, is he a boy or girl and who is Alexandra!? thanks so much for your help
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