Publications by Cliff Lee
Clee - Assignment 8
Question 1 Use integration by substitution to solve the integral below: \(\int 4e^{-7x}dx\) Answer: \(\int 4e^{-7x}dx\) \(4\int e^{-7x}dx\) \(4\int{e^u}du\) where \(u = -7x\) \(4 e^u + C\) \(4e^{-7x} + C\) Question 2 Biologists are treating a pond contaminated with bacteria. The level of contamination is changing at a rate of \(\frac{dN}{dt} = -...
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Predicting Housing Prices with Multiple Regression
King’s County Housing Sales with Multiple Regression This round, we’ll try predict housing prices via multiple regression and including extra predictors: A quadratic term A dichotomous term A dichotomous vs quantitative term We’ll add these extra terms with our original term of square footaage above ground level (sqft_above) and evaluate ...
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Linear Regression - Car Speed and Stopping Distance
Overview Using the “cars” dataset in R, build a linear model for stopping distance as a function of speed and replicate the analysis of your textbook chapter 3 (visualization, quality evaluation of the model, and residual analysis.) We will perform our analysis using the lm function from base R. Data Exploration The cars data frame has two c...
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Estimating Life Expectancy Through Multiple Regression
Question 1 Provide a scatterplot of LifeExp~TotExp, and run simple linear regression. Do not transform the variables. Provide and interpret the F statistics, R^2, standard error,and p-values only. Discuss whether the assumptions of simple linear regression met. For a linear regression model, there are four prerequisites: A linear relationship ...
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