Publications by DEVINE FATHY MAE S. GRINO
Cluster Analysis in R (Discriminant Analysis)
library(factoextra) ## Warning: package 'factoextra' was built under R version 4.3.3 ## Loading required package: ggplot2 ## Welcome! Want to learn more? See two factoextra-related books at https://goo.gl/ve3WBa mydata <- read.csv("D:/stat/Data.txt", header=T) str(mydata) ## 'data.frame': 22 obs. of 9 variables: ## $ Company : chr "Ariz...
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Cluster Analysis
library(factoextra) ## Warning: package 'factoextra' was built under R version 4.3.3 ## Loading required package: ggplot2 ## Welcome! Want to learn more? See two factoextra-related books at https://goo.gl/ve3WBa Data preparation The built-in R dataset USArrests is used: # Load and scale the dataset data("USArrests") df <- scale(USArrests) head(...
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Canonical Correlation Analysis
library(ggplot2) library(GGally) ## Warning: package 'GGally' was built under R version 4.3.3 ## Registered S3 method overwritten by 'GGally': ## method from ## +.gg ggplot2 library(CCA) ## Warning: package 'CCA' was built under R version 4.3.3 ## Loading required package: fda ## Warning: package 'fda' was built under R version 4.3.3 ##...
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EXERCISE 1-8
knitr::opts_chunk$set(echo = TRUE, comment = "", message = FALSE) Lesson 1: Measures of Central Tendency, Dispersion and Association Warning: package 'readxl' was built under R version 4.3.3 Warning: package 'dplyr' was built under R version 4.3.3 # A tibble: 737 × 5 calcium iron protein `vitamin A` `vitamin C` <dbl> <dbl> <dbl> ...
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PROBLEM SET 4
Introduction to Regression in R Simple Regression [Regression analysis is a statistical tool used to explain the relationship between a response (dependent, outcome) variable as a function of one or more predictor (independent) variables.] [In a linear regression model we assume this relationship can be explained with a linear function.] [a si...
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Laboratory Activity 5
1. Problem and Data Set The researcher is conducting an experiment to understand the joint effects of temperature and humidity on the growth of a specific plant species. The temperature has two levels: Low (20°C) and High (30°C), while humidity also has two levels: Low (40%) and High (80%). Each combination of temperature and humidity will be...
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PROBLEM SET 7
What is the minimum age? Answer: \(30\) Min. 1st Qu. Median Mean 3rd Qu. Max. 30.00 43.00 50.00 49.27 57.00 60.00 In the variable “age”, group the “age” variable into two groups, with atmost 50 years and more than 50 years old. How many of them with at least 50 years old? Answer: \(69\) Socio-Demographic Profi...
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PROBLEM SET 3
Page 52 Page 58 Page 72 Page 80 Page 91 Page 100 Page 104 Page 115 Page 124 Page 52 Exercise Test whether the slope coefficient for the father.son data is different from zero (father as predictor, son as outcome). Call: lm(formula = sheight ~ fheight, data = father.son) Residuals: Min 1Q Median 3Q Max -8.8772 -1.5144 -...
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PROBLEM SET 6
library(aod) library(ggplot2) Examples Example 1. Suppose that we are interested in the factors that influence whether a political candidate wins an election. The outcome (response) variable is binary (0/1); win or lose. The predictor variables of interest are the amount of money spent on the campaign, the amount of time spent campaigning neg...
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Laboratory Activity 4
An experiment was conducted to determine if either firing temperature or furnace position affects the baked density of a carbon anode. The data are shown below. 1. Write your experimental question. Use α=0.05. Is there a significant effect of firing temperature, furnace position and the interaction of firing temperature and furnace position in...
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