So 5'9 is tall for a Japanese woman?

Even though I was born in Tokyo, Japan my parents moved back to Maine, US when I was 10 months old. Obviously I have no memories of my homecountry.

I looked fully Japanese but several people still figured out I'm a mixed person. Someone said that a tall Japanese got the genes elsewhere. Well I got all my mother's physical traits but yeah our heights are different. She's 5'1 and I'm 5'9. She married my dad; a 6'4 Dutch American.

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Same thing with my younger 19 year-old brother. From outside, he looks fully Japanese but he's my dad's exact height. So 5'9 is tall for a Japanese woman?
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I look like my mother when she was younger but in a taller version.
So 5'9 is tall for a Japanese woman?
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