Publications by Alexis Mekueko
Data621_Homework2
Github Link: https://github.com/asmozo24/Data621_Assignment2 Web link: https://rpubs.com/amekueko/742903 Using R to acquire data What is the structure of data? ## Rows: 181 ## Columns: 11 ## $ pregnant <int> 7, 2, 3, 1, 4, 1, 9, 8, 1, 2, 5, 5, 13, 0, 7, 12... ## $ glucose <int> 124, 122, 107, 91, 83, 100, 89, 120, 79, 123,...
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DATA605_HW7
Problem 2. Your organization owns a copier (future lawyers, etc.) or MRI (future doctors). This machine has a manufacturer’s expected lifetime of 10 years. This means that we expect one failure every ten years. (Include the probability statements and R Code for each part.). this is saying P = 1/10 = 0.1 a. What is the probability that the mach...
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Data605_Calculus
\[ 1.\ Integrate\ \int 4e^{-7x} dx\\ \\ Let\ u\ =\ -7x\ \Longrightarrow \ dx\ =\ -\frac{du}{7}\\ \\ We\ have:\int 4e^{-7x} dx\ =\ 4\int \frac{e^{u}}{-7} du\ =\ -\frac{4}{7} e^{u} \ +\ c\ =\ -\frac{4}{7} e^{-7x} +\ C\\ \\ \\ \] \[ 2.\ Rate\ of\ change\ and\ estimation\ function.\\ \\ \frac{dN}{dt} =-\frac{3150}{t^{4}} -220\\ \\ dN\ =\...
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Data621_HW5: Regression Model for Count Data
#{r set-options, echo=FALSE, cache=FALSE} #options(width = 12) # Github Master files: https://github.com/asmozo24/Data621_HW5_Count_Regression Overview In this homework assignment, we will explore, analyze and model a data set containing information on approximately 12,000 commercially available wines.The variables are mostly related to the chemi...
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Data605 HW15
Problem 1: Find the equation of the regression line for the given points. Round any final values to the nearest hundredth, if necessary. ( 5.6, 8.8 ), ( 6.3, 12.4 ), ( 7, 14.8 ), ( 7.7, 18.2 ), ( 8.4, 20.8 ). We need to create a dataframe with all these data points. x1 <- c(5.6, 6.3, 7, 7.7, 8.4) y1 <- c(8.8, 12.4, 14.8, 18.2, 20.8) df1 <- data...
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Data605 HW12 Multiple Linear Regression
Guthub Repo: https://github.com/asmozo24/DATA605_Regression_Analysis web: Homework 12: Multiple Linear Regression Loading the data from github The dataset used on this assignment comes from a real-world data-2008. The variables description are shown below. variable_names1 <- read.csv("https://raw.githubusercontent.com/asmozo24/DATA605_Regressio...
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Data621_Lack of Fit_Regression Model
For the salmonella dataset, fit a linear model with colonies as the response and log(dose+1) as the predictor. Check for lack of fit. Loading the salmonella datase ## Rows: 18 ## Columns: 2 ## $ colonies <int> 15, 21, 29, 16, 18, 21, 16, 26, 33, 27, 41, 60, 33, 38, 41... ## $ dose <int> 0, 0, 0, 10, 10, 10, 33, 33, 33, 100, 100, 100, 333, ...
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Data605 HW11 Linear Model
Problem: 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.) ## Structure of Daataset: cars ## 'data.frame': 50 obs. of 2 variables: ## $ speed: num 4 4 7 7 8 9 10 1...
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Data621_HW4
Github Master files with code link: https://github.com/asmozo24/Data621-Multiple-Linear-Regression Overview In this homework assignment, we will explore, analyze and model a data set representing a customer at an auto insurance company. Each record has two response variables. The first response variable, TARGET_FLAG, is a 1 or a 0. A “1” mea...
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DATA605_HW13
Homework: 13 1. Use integration by substitution to solve the integral below \[ A = \int\limits_{}^{}4e^{-7x}\, dx = 4\int\limits_{}^{}e^{-7x}\, dx, \quad Let's \quad set \quad u = -7x\\ \frac{du}{dx}=\frac{d(-7x)}{dx}=-7, \quad dx = \frac{-1}{7}du, \quad A = \frac{-4}{7}\int\limits_{}^{}e^u\, du \\ A = \frac{-4}{7}e^{-7x} \] 2. Biologis...
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