lampiran contoh perhitungan keseksamaan

CONTOH PERHITUNGAN KESEKSAMAAN

Contoh perhitungan keseksamaan pada setting poin lima bar kalibrasi Increase:

Diket: IN₁ = 4,90 bar

IN₂ = 4,89 bar

IN₃ = 4,99 bar

IN₄ = 4,78 bar

IN₅ = 4,88 bar

n = 5

Dit : % Keseksamaan

Penyelesaian:

IN₁ + IN₂ + IN₃ + IN₄ + IN₅

= 4,90 + 4,89 + 4,99 + 4,78 + 4,88

= 23,63 bar

= = = 4,888

Deviasi = = 4,90-4,888 = 0,120

= 4,89-4,888 = 0,002

= 4,99-4,888 = 0,102

= 4,78-4,888 = -0,108

= 4,88-4,888 = -0,008

Deviasi kuadrat = = (0,12)² = 0,000144

= (0,002)² = 0,000004

= (0,102)² = 0,022808

= (-0,108)² = 0,011664

= (-0,008)² = 0,00064

= ++++

= 0,000144 + 0,000004 + 0,022808 + 0,011664 + 0,00064

= 0,02228

Standar deviasi = = = 0,051877

Nilai sebenarnya = standar deviasi = 23,63 0,051877

Keseksamaan = 100% - % = 99,99787 %