5.5. HASIL PERCOBAAN DAN PERHITUNGAN

5.5.1. Hasil Percobaan

Tabel V-1.Tabel Temperatur Titik Kabut, Titik Beku, dan Titik Tuang

Analisa Sampel Minyak A Sampel Minyak B

Titik Kabut 20 oC 68 oF 19 oC 66,2 oF

Titik Beku 13 oC 55,4 oF 5 oC 41 oF

Titik Tuang 16 oC 60,8 oF 10 oC 50 oF

5.5.2. Perhitungan

A. Sampel Minyak 1 :

- Titik Kabut = 20 oC ; (9/5 x 30 oC) + 32 = 68 oF

- Titik Beku = 13 oC ; (9/5 x 22 oC) + 32 = 55,4 oF

- Titik Tuang = 16 oC ; (9/5 x 25 oC) + 32 = 60,8 oF

B. Sampel Minyak 2 :

- Titik Kabut = 19 oC ; (9/5 x 49 oC) + 32 = 66,2 oF

- Titik Beku = 5 oC ; (9/5 x 40 oC) + 32 = 41 oF

- Titik Tuang = 10 oC ; (9/5 x 46 oC) + 32 = 50 oF

1. Perhitungan Rata - Rata / Mean Titik Kabut, Titik Beku dan Titik Tuang :

Sampel 1 :

Titik Beku mean = ∑ Titik Bekun

= 588, 210

= 58,82 °F

Titik Tuang mean = ∑ Titik Tuangn

= 598,110

= 59,81 °F

Titik Kabut mean = ∑ Titik Kabutn

= 722,310

= 7 2,23°F

Sampel 2 :

Titik Kabut mean = ∑ Titik Kabutn

= 678,610

= 67,86 °F

Titik Beku mean = ∑ Titik Bekun

= 366,810

= 36,68° F

Titik Tuangmean = ∑ Titik Tuangn

= 471,210

= 47,12°F

2. Perhitungan Standar Deviasi Titik kabut, Titik Beku dan Titik Tuang :

Sampel 1:

SD Titik Kabut (TK ) =√∑ (TK - TK mean )2

n-1=√729,081

9= 9,0005

SD Titik Beku (TB ) = √∑ (TB-TB mean )2

n-1 =√1603,476

9= 13,347

SD Titik Tuang (TT ) =√∑ ( TT-TT mean )2

n-1=√1147,689

9=11,2925

Sampel 2:

SD Titik Kabut (TK ) =√∑ (TK - TK mean )2

n-1 =√1273,104

9= 11,8935

SD Titik Beku (TB ) =√∑ (TB - TB mean )2

n-1 =√416,016

9= 6,7988

SD Titik Tuang ( TT )=√∑ ( TT-TT mean )2

n-1=√1303,776

9=12,03595

Tabel V-2.Tabulasi Hasil Perhitungan Titik Kabut, Titik Beku, dan Titik Tuang

Sampel A

PlugSampel A Perhitungan SD

TK (oF)

TB (oF)

TT (oF)

(TK-TKmean)^2 (TB-TBmean)^2 (TT-

TTmean)^2

A 78.8 73.4 75.2 41.19 17.07 12.06B 68 19.4 28.4 95.68 71.71 95.51C 82.4 46.4 51.8 0.61 9.41 95.51D 80.6 68 71.6 100.36 59.78 0.6E 91.4 78.8 86 19.2 23.7 19.12F 87.8 74.3 77 666.58 128.41 975.14G 69.8 62.6 66.2 63.71 50.67 38.1H 73.4 62.6 75.2 95.68 71.71 63.56I 86 71.6 77 38.21 1.61 0.6J 80.6 73.4 98.6 0.61 35.19 41.31Σ 798.8 630.5 707 1121.83 469.26 1341.51

Mean 79.88 63.05 70.7StandarDeviasi 11.16457692 7.220803279 12.20887655

Tabel V-3.Tabulasi Hasil Perhitungan Titik Kabut, Titik Beku, dan Titik Tuang

Sampel B

PlugSampel B Perhitungan SD

TK (oF)

TB (oF)

TT (oF)

(TK-TKmean)^2

(TB-TBmean)^2

(TT-TTmean)^2

A 100.4 87.8 89.6 10080.16 7708.84 8028.16B 79.7 35.6 44.6 6352.09 1267.36 1989.16C 69.8 50 78.8 4872.04 2500.00 6209.44D 100.4 80.6 86 10080.16 6496.36 7396.00E 98.6 91.4 95 9721.96 8353.96 9025.00F 100.4 95 86 10080.16 9025.00 7396.00G 82.4 68 80.6 6789.76 4624.00 6496.36H 102.2 95 87.8 10444.84 9025.00 7708.84I 120.2 104 114.8 14448.04 10816.00 13179.04J 98.6 91.4 104 9721.96 8353.96 10816.00Σ 952.7 798.8 867.2 92591.17 68170.48 78244.00

Mean 95.27 79.88 86.72StandarDeviasi 101.43 87.03 93.24