graph TB
a(随机变量)
b(离散型)
c(连续性)
d(其他类型)
e(常见离散型分布)
f(分布律)
g(分布函数)
h(性质)
a-->b
a-->c
a-->d
b-->e
b-->f
b-->g
f-->h
c-->g
i(两点分布)
st=>staart:开始
e=>end:结束
st->e->
st=>start: Start|past:>http://www.baidu.com
e=>end: End:>http://www.baidu.com
op1=>operation: My Operation|past
op2=>operation: Stuff|current
sub1=>subroutine: My Subroutine|invalid
cond=>condition: Yes or No?|approved:>http://www.baidu.com
c2=>condition: Good idea|rejected
io=>inputoutput: catch something...|request
st->op1(right)->cond
cond(yes, right)->c2
cond(no)->sub1(left)->op1
c2(yes)->io->e
c2(no)->op2->e
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