{"product_id":"modeling-nonlinearity-and-interaction-in","title":"Modeling Nonlinearity And Interaction In By Wojtkiewicz  Roger A","description":"\u003cp\u003eThis volume addresses the issue of linear constraints in regression modeling. Author Roger A. Wojtkiewicz uses the method of knotted spline variables (also known as piecewise linear regression) and a new method involving group spline variables to model nonlinearity in a variety of situations. Using spline variables to model nonlinearity allows researchers to specify unrestricted models for models that involve interval variables, allowing for greater flexibility in modeling any possible interaction.\u003c\/p\u003e","brand":"MediaPlace","offers":[{"title":"Default Title","offer_id":57584658743678,"sku":"NW9781071950340","price":38.64,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/1379\/1261\/files\/9781071950340.jpg?v=1783329133","url":"https:\/\/mediaplace.com\/products\/modeling-nonlinearity-and-interaction-in","provider":"MediaPlace","version":"1.0","type":"link"}