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【简答题】
They walked home the park.
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举一反三
【单选题】Which of the following is true of standard error?
A.
It can take negative values.
B.
It is an estimate of the standard deviation.
C.
It is the square root of the variance.
D.
It complicates the computation of confidence intervals.
【单选题】The standard error of estimate is based on:
A.
squared deviations from the regression line.
B.
negative values.
C.
squared units of the independent variable.
D.
the regression mean square error.
【判断题】Standard error is a kind of standard difference and it could be used indicate the extent of sampling error.
A.
正确
B.
错误
【单选题】The multiple standard error of estimate is:
A.
found by taking the square root of SSR/SS total.
B.
negative when one of the net regression coefficients is 0.
C.
based on the term, (Y – Ŷ) 2.
D.
the error of estimating the regression coefficients.
【单选题】关于易化扩散的叙述错误的是
A.
有载体介导的跨膜物质转运
B.
有通道介导的跨膜离子转运
C.
载体转运具有高度的特异性
D.
通道的选择性较载体差
E.
类固醇激素进入细胞属易化扩散
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