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 adds $2-$6 per square foot. 2  Laminate: One of the easiest wood floors to install, laminates have a broad range of costs, starting at about $.75 and topping out at around $7 per square foot for just material, depending on quality and how realistic the image is.