METODE PENDUGAAN KEMAMPUAN SUPPLY PRODUK KAYU DARI BERBAGAI INDUSTRI DI PROPINSI RIAU

Abstract

The aim of this investigation is to create a prediction model on the potentiality of supplying merchant wood products. The investigation was carried out in the province of Riau Four Sawmills and two plywood industries were selected for this study.

The annual data concerning production factors (input factors) such as material input (x₁), the price of raw material (x₂), The cost of additive matters/auxiliaries (x₃), the designed production capacities (x₄), and the price per unit product (x₅) were collected. In addition, their annual production (Y) was also recorded.

The prediction model is intended to interpret the relationship between production factors and their actual production per annum by applying multiple regression analysis. The prediction models for Sawmill products and plywood products are presented respectively as follow :

Y = 7.2140 + 0.5717 x₁ – 0.1323 x₂ – 0.1787 x₃ + 0.0078 x₄ + 0.2188 x₅, and

Y = 10.1774 + 2.1724 x₁ – 0.6431 x₂ + 0.0071 x₃ + 0.6182 x₄ + 0.7128 x₅.

Both models show a considerable high of confidence (P = 0.95).