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单词
mean-square deviation
释义
mean-square deviation
mean-square deviation
[
′mēn ′skwer dē·vē′ā·shən
]
(statistics)
A measure of the extent to which a collection
v
1
,
v
2
, …,
v
n
of numbers is unequal; it is given by the expression (1/
n
)[(
v
1
- v̄)
2
+ ⋯ + (
v
n
- v̄)
2
], where v̄ is the mean of the numbers.
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更新时间:2025/3/14 2:19:52