Best fit lines and curves, and some mathe-magical transformations

Best Fit Lines and Curves, and Some Mathe-Magical Transformations (Volume III of the Working Guides to Estimating & Forecasting series) concentrates on techniques for finding the Best Fit Line or Curve to some historical data allowing us to interpolate or extrapolate the implied relationship tha...

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Bibliographic Details
Main Author: Jones, Alan
Format: eBook
Language:English
Published: Abingdon, Oxon Routledge 2019
Series:Working guides to estimating & forecasting
Subjects:
Online Access:
Collection: O'Reilly - Collection details see MPG.ReNa
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245 0 0 |a Best fit lines and curves, and some mathe-magical transformations  |c Alan R. Jones 
260 |a Abingdon, Oxon  |b Routledge  |c 2019 
300 |a 1 volume  |b illustrations 
505 0 |a Includes bibliographical references and index 
505 0 |a Introduction and objectives -- Linear and nonlinear properties (!) of straight lines -- Trendsetting with some simple moving measures -- Simple and multiple linear regression -- Linear transformation: making bent lines straight -- Transforming nonlinear regression -- Least squares nonlinear curve fitting without the logs -- The ups and downs of time series analysis 
653 |a Coût de production / Devis estimatifs 
653 |a Costs, Industrial / Estimates 
653 |a Regression analysis / http://id.loc.gov/authorities/subjects/sh85112392 
653 |a Coût de production / Méthodes statistiques 
653 |a Industrial engineering / Statistical methods / http://id.loc.gov/authorities/subjects/sh85065867 
653 |a Analyse de régression 
653 |a Costs, Industrial / Statistical methods / fast 
653 |a Regression Analysis 
653 |a Regression analysis / fast 
653 |a Industrial engineering / Statistical methods / fast 
653 |a Costs, Industrial / Estimates / fast 
653 |a Costs, Industrial / Statistical methods 
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490 0 |a Working guides to estimating & forecasting 
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520 |a Best Fit Lines and Curves, and Some Mathe-Magical Transformations (Volume III of the Working Guides to Estimating & Forecasting series) concentrates on techniques for finding the Best Fit Line or Curve to some historical data allowing us to interpolate or extrapolate the implied relationship that will underpin our prediction. A range of simple 'Moving Measures' are suggested to smooth the underlying trend and quantify the degree of noise or scatter around that trend. The advantages and disadvantages are discussed and a simple way to offset the latent disadvantage of most Moving Measure Techniques is provided. Simple Linear Regression Analysis, a more formal numerical technique that calculates the line of best fit subject to defined 'goodness of fit' criteria. Microsoft Excel is used to demonstrate how to decide whether the line of best fit is a good fit, or just a solution in search of some data. These principles are then extended to cover multiple cost drivers, and how we can use them to quantify 3-Point Estimates. With a deft sleight of hand, certain commonly occurring families of non-linear relationships can be transformed mathe-magically into linear formats, allowing us to exploit the powers of Regression Analysis to find the Best Fit Curves. The concludes with an exploration of the ups and downs of seasonal data (Time Series Analysis). Supported by a wealth of figures and tables, this is a valuable resource for estimators, engineers, accountants, project risk specialists as well as students of cost engineering