Analisis Hubungan Surat Masuk terhadap Penerbitan Surat Keluar (SPT dan SPPD Karyawan) di Kantor Bupati Langkat Menggunakan Metode Regresi Linear

Erika Handayani Br Siahaan
Fadila Inka Syahfitri
Rico Pradana Dita
Rizq Alwi Marpaung
Hendra Cipta

Bilangan: Jurnal Ilmiah Matematika, Kebumian dan Angkasa
Vol. 3 No. 3 (2025): Juni: Bilangan : Jurnal Ilmiah Matematika, Kebumian dan Angkasa

This study aims to determine the relationship between the number of incoming letters and outgoing letters in the form of Assignment Letters (SPT) and Official Travel Orders (SPPD). The research employs a quantitative approach using simple linear regression analysis, with data collected through direct observation and official document records. The findings indicate a positive relationship between incoming and outgoing letters; however, the relationship is not statistically significant (p-value = 0.068). The coefficient of determination (R²) is 0.358, meaning that 35.8% of the variation in outgoing letters is influenced by incoming letters, while the rest is affected by other factors. These results underscore the need for stronger administrative management systems to improve bureaucratic efficiency and accountability.