Estimasi Ketidakpastian Pengujiaan.docx

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Estimasi Ketidakpastian Pengujiaan ยต=

๐‘†๐‘ฆ/๐‘ฅ 1 1 (๐‘ฆฬ…๐‘ ๐‘ โˆ’ ๐‘ฆฬ…๐‘ ๐‘ก๐‘‘)2 โˆš + + ๐‘ ๐‘™๐‘œ๐‘๐‘’ ๐‘ ๐‘› ๐‘ ๐‘™๐‘œ๐‘๐‘’ 2 โˆ‘(๐‘ฅ๐‘– โˆ’ ๐‘ฅฬ… ๐‘ ๐‘ก๐‘‘)2

Keterangan : p : replikasi sampel n : nilai standar yang digunakan ๐‘ฆฬ…๐‘ ๐‘ : absorbansi rata-rata sampel ๐‘ฆฬ…๐‘ ๐‘ก๐‘‘ : absorbansi rata-rata standar ๐‘ฅ๐‘– : konsentrasi standar ke-i ๐‘ฅฬ… ๐‘ ๐‘ก๐‘‘ : konsentrasi standar x 0 0,05 0,1 0,5 1 2 3 4 6

y 0 0,0026 0,0031 0,0214 0,0443 0,0807 0,1209 0,1574 0,2589

8 0,3291 10 0,4166 12 0,493 15 0,6046 Jumlah Rerata 0,194815

(ppm) (ppm)

yi (y-yi)2 xrerata (x-xrerata)2 Ket A2ppm (y2ppm-ystd)2 ยต 0,001 0,000001 4,742308 22,4894822 0,0806 Slope 0,01300711 0,003 1,6E-07 4,742308 22,0177515 0,0806 0,005 3,61E-06 4,742308 21,5510207 0,04 0,081 Sy/x 0,021 1,6E-07 4,742308 17,9971746 Intersep 0,081 0,00860877 0,041 1,09E-05 4,742308 14,0048669 0,0807 0,001 0,081 9E-08 4,742308 7,52025148 0,0807 0,121 1E-08 4,742308 3,03563609 Jumlah 0,4846 0,161 1,3E-05 4,742308 0,55102071 0,111847 Rerata 0,080767 0,241 0,00032 4,742308 1,58178994 0,321 6,56E-05 4,742308 10,6125592 0,401 0,000243 4,742308 27,6433284 0,481 0,000144 4,742308 52,6740976 0,601 1,3E-05 4,742308 105,220251 0,000815 306,899231

ยต=

Slope2

0,0016

0,0086 1 1 (0,0807 โˆ’ 0,1948)2 โˆš + + 0,04 6 13 (0,0016) (306,8992) ยต = 0,1185 ๐‘๐‘๐‘š

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