1
我有以下情節：如何擬合線性趨勢線到Libre Office Calc中的半對數散點圖？
，我想以適應線性趨勢線的數據，所以可在進一步計算中使用的斜率。然而，當我嘗試以適應線性趨勢線，我得到這個： 
如果我適合功率趨勢線，然後我得到了R^2過.999，但趨勢線是沒用的，我...是否任何人都知道完成這個的正確方法？
編輯：這裏是CSV格式
Iron in Copper,,,Cobalt in Copper,,,Nickel in Copper,,
T (oC),D (cm2/sec),1/T (1/K),T (oC),D (cm2/sec),1/T (1/K),T (oC),D (cm2/sec),1/T (1/K)
1074,5.65E-09,0.0007423078,1077,3.43E-09,0.0007406584,1076,1.98E-09,0.0007412074
974,1.11E-09,0.0008018282,983,7.64E-10,0.0007960833,980,3.57E-10,0.0007979891
895,2.86E-09,0.0008560544,904,1.77E-10,0.0008495094,900,7.87E-11,0.0008524059
830,7.80E-11,0.000906495,844,5.09E-11,0.0008951349,847,2.61E-11,0.0008927376
780,2.67E-11,0.0009495324,793,1.65E-11,0.0009379543,791,6.82E-12,0.0009397171
719,6.55E-12,0.0010079121,744,5.31E-12,0.0009831392,743,1.90E-12,0.0009841067
,,,701,1.76E-12,0.001026536,,,
@tohuwawohu發佈 – DrJPepper
您的y軸是對數座標。所以肯定線性趨勢線看起來像你看到它。 –