所有捐赠方透明度得分的平均值为60.8%。
而过去五年的平均值为52天的存量。
The average over the past five years has been 52 days' worth.
平均值为200,区间为178到248。
If x is high relative to x-bar--this is positive-- then y tends to be low relative to its mean y-bar and this is negative.
如果x比x均值要大,这个为正,而y比y均值小,这个为负
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