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What is 75/25 Validation

Chapter 5
Open Source Software for Statistical Analysis of Big Data: Emerging Research and Opportunities
75/25 validation is a type of model validation. 75% of data is used for model construction, and 25% of data is used for model validation.
Published in Chapter:

Generalized Linear Model for Automobile Fatality Rate Prediction in R

Gao Niu (Bryant University, USA) and Alan Olinsky (Bryant University, USA)
Copyright: © 2020 | Pages: 25
DOI: 10.4018/978-1-7998-2768-9.ch005

Abstract

This chapter demonstrates the descriptive and statistical modeling function in R. The automobile fatal accident data of the United States is extracted from the Fatality Analysis Reporting System (FARS). The model will be used to understand significant contributing factors of automobile accident death when a fatal crash happens. First, descriptive analysis is performed by basic R functions and packages. Then, generalized linear model (GLM) with logit link function is explored and constructed. Finally, multiple validation metrics are introduced and calculated to ensure the reasonability and accuracy of the predictions. The focus of this chapter is to demonstrate the power and flexibility of the most popular Open Source Statistical Software (OSSS) through a real data analysis.
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