Excel.docx
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Uji statistik 2 sampel 𝑥1 − ̅̅̅ ̅̅̅ 𝑥2
𝑡=
𝑠1 2 𝑠2 2 𝑛1 + 𝑛2
√
𝑥1 = 𝑟𝑎𝑡𝑎 − 𝑟𝑎𝑡𝑎 𝑠𝑎𝑚𝑝𝑙𝑒 1 𝑥2 = 𝑟𝑎𝑡𝑎 − 𝑟𝑎𝑡𝑎 𝑠𝑎𝑚𝑝𝑙𝑒 2 𝑛1 = 𝑗𝑢𝑚𝑙𝑎ℎ 𝑑𝑎𝑡𝑎 1 𝑛2 = 𝑗𝑢𝑚𝑙𝑎ℎ 𝑑𝑎𝑡𝑎 2 𝑠1 = 𝑣𝑎𝑟𝑖𝑎𝑛 1 𝑠2 = 𝑣𝑎𝑟𝑖𝑎𝑛 2 𝑛
𝑛
2
2
2
𝑠 = 𝑛 ∑ 𝑥1 − (∑ 𝑥1 ) 𝑖=1
𝑖=1
∑ 𝑥1 2 = ∑ 𝑥2 2 = (∑ 𝑥1 2 )2 = (∑ 𝑥2 2 )2 = 𝑠1 2 = 𝑛1 𝑠2 2 = 𝑛2
𝑡=
𝑠1 2 𝑠2 2 𝑛1 + 𝑛2
√
𝑥1 = 𝑟𝑎𝑡𝑎 − 𝑟𝑎𝑡𝑎 𝑠𝑎𝑚𝑝𝑙𝑒 1 𝑥2 = 𝑟𝑎𝑡𝑎 − 𝑟𝑎𝑡𝑎 𝑠𝑎𝑚𝑝𝑙𝑒 2 𝑛1 = 𝑗𝑢𝑚𝑙𝑎ℎ 𝑑𝑎𝑡𝑎 1 𝑛2 = 𝑗𝑢𝑚𝑙𝑎ℎ 𝑑𝑎𝑡𝑎 2 𝑠1 = 𝑣𝑎𝑟𝑖𝑎𝑛 1 𝑠2 = 𝑣𝑎𝑟𝑖𝑎𝑛 2 𝑛
𝑛
2
2
2
𝑠 = 𝑛 ∑ 𝑥1 − (∑ 𝑥1 ) 𝑖=1
𝑖=1
∑ 𝑥1 2 = ∑ 𝑥2 2 = (∑ 𝑥1 2 )2 = (∑ 𝑥2 2 )2 = 𝑠1 2 = 𝑛1 𝑠2 2 = 𝑛2
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