lecture_chp12_6 - Lecture and Examples Topic 6 Models with...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture and Examples Topic 6: Models with a Single Quantitative Independent Variable As described in previous lectures, the first step in the construction of a regression model is to hypothesize the deterministic portion of the probabilistic model. So far, we assume that we know the deterministic portion of our probabilistic model. However, in a model building process, we do not know the best model in advance. We need to fit several models before we can identify the model that fits the data best. In this lecture, we will discuss the model building process with one quantitative independent variable. Quantitative variables always assume numerical values whereas qualitative variables usually assume nonnumerical values. The possible values of an independent variable are called levels . Each level of a Quantitative Independent Variable usually assumes numerical value and each level of a Qualitative Independent Variable usually assumes nonnumerical value.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Example 12.11 : For each of the following independent variables, identify the variables as quantitative or qualitative. (a) Number of years experience (b) Gender of the employee (c) Rank of the employee (d) Weight (e) Height (f) Volume (g) Annual Household Income (h) Letter Grade Solution: Quantitative independent Variables : Number of years experience, Weight, Height, Volume, and Annual Household Income Qualitative Independent Variables : Gender of the employee, Rank of the employee, and Letter Grade
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 08/30/2011 for the course STA 4164 taught by Professor Staff during the Spring '08 term at University of Central Florida.

Page1 / 11

lecture_chp12_6 - Lecture and Examples Topic 6 Models with...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online