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f_grd - Gradient
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f_grd-漸變
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Returns the gradient of a straight line by using linear regression per DS
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使用線性回歸返回直線的漸變
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f_last - Last Value
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f_last-最終值
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Returns the last valid measured value per DS
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返回最後一個測量值
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f_1st - First Value
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f_1st-第一值
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Returns the first valid measured value per DS
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返回第一個測量值
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f_nan - Number of NaNs
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f_nan-NaN數
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Returns the number of NaNs stored per DS
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返回值的數量
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f_median - Median
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f_median-中位數
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Returns that value that separates the higher half from the lower half per DS
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返回將每個DS的上半部分與下半部分分開的值
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f_range - Range
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f_range-範圍
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Returns the difference between the largest and the smallest value per DS
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返回每個DS的最大值和最小值之間的差
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f_iqr - Interquartile Range
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f_iqr-四分位間距
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Returns the distance of the middle50% around the median per DS
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返回每個DS的中間值中間值的50％的距離
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f_sd - Standard Deviation
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f_sd-標準偏差
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Returns the square root per data source variance
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返回最後一個測量值
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f_var - Variance
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f_var-方差
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Returns the variance per DS
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以整數形式返回float
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f_xth - Xth Percentile
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f_xth-Xth百分位數
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Returns the xth percentitle.
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返回最後一個測量值
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