Data Praktikan

Dial Indicator

Pengukuran dengan Dial Indicator

Avg = ∑i=1

n❑Xi

n

= 665+664+668+665+672+666+665+6658

= 666.25

S2 = ∑i=1

n (Xi−XAvg)n−1

=(665−666.25)+(664−666.25)+(668−666.25)+(665−666.25)+(672−666.25)+(666−666.25)+(665−666.25)+(665−666.25)

8

= 0

Pengukuran dengan Bevel Protactor

Bevel Protactor

Avg = ∑i=1

n❑Xi

n=

141.083+140.83+141.83+140+139.333+140.5+140.5+140.258

= 140.44

S2 = ∑i=1

n (Xi−XAvg)n−1

=141.083+140.83+141.83+140+139.333+140.5+140.5+140.25

8

= 140.44

Pengukuran dengan Mikrometer Sekrup

Mikrometer Sekrup

Avg = ∑i=1

n❑Xi

n

= 665+664+668+665+672+666+665+6658

= 666.25

S2 = ∑i=1

n (Xi−XAvg)n−1

= 14 [(665-666.25)+(664-666.25)+(668-666.25)+(665-666.25)+(672-666.25)+(666-666.25)+(665-666.25)+(665-666.25)]= 0

Pengukuran Jangka Sorong Kedalaman

Jangka Sorong Kedalaman

Avg = ∑i=1

n❑Xi

n

= 665+664+668+665+672+666+665+6658

= 666.25

S2 = ∑i=1

n (Xi−XAvg)n−1

= 14 [(665-666.25)+(664-666.25)+(668-666.25)+(665-666.25)+(672-666.25)+(666-666.25)+(665-666.25)+(665-666.25)]= 0

Pengukuran Jangka Sorong Diameter Dalam

Jangka Sorong Diameter Dalam

Avg = ∑i=1

n❑Xin

= 665+664+668+665+672+666+665+6658

= 666.25

S2 = ∑i=1

n (Xi−XAvg)n−1

= 14 [(665-666.25)+(664-666.25)+(668-666.25)+(665-666.25)+(672-666.25)+(666-666.25)+(665-666.25)+(665-666.25)]= 0

Pengukuran Jangka Sorong Diameter Luar

Jangka Sorong Diameter Luar

Avg = ∑i=1

n❑Xin

= 665+664+668+665+672+666+665+6658

= 666.25

S2 = ∑i=1

n (Xi−XAvg)n−1

= 14 [(665-666.25)+(664-666.25)+(668-666.25)+(665-666.25)+(672-666.25)+(666-666.25)+(665-666.25)+(665-666.25)]= 0