Learn about this topic in these articles: in statistics: Residual analysis. The ith residual is the difference between the observed value of the dependent variable, y i, and the value predicted by the estimated regression equation, Å· i. These residuals, computed from the available data, are treated as estimates of the model error, Îµ.
Get an INSTANT estimate of the cost to Install a Wood Floor! Our free calculator uses recent, trusted data to estimate costs for your Hardwood Flooring Installation project. For a basic 120 square feet project in zip code 47474, the benchmark cost to Install a Wood Floor ranges between $8.21 - $11.04 per square foot* .To estimate costs for your project:1.or a basic 120 square feet project in zip code 47474, the benchmark cost to Install a Wood Floor ranges between $8.21 - $11.04 per square foot* . To estimate costs for your project: 1.
1 A more skilled wood to install, a professional might charge $2-$6 per square foot for installation. 2  Hardwood: With a great variance of wood types and colors, hardwood flooring can cost $2-$14 per square foot or more, depending on how solid the planks are, thickness, finish, and how exotic the wood is. Professional installation will add $2-$5 per square foot to the total price. 2  For materials alone, a 200 square-foot area can cost as little as $150 for a basic laminate wood floor. 3  To have a 200 square-foot area done professionally, materials and labor will cost around $550.