Publications by Ximena Ramirez
Using Regression Analysis for Feature Selection in R
Using regression analysis to explore factors influencing a car’s mileage. Ximena Ramirez Questions What is the relationship between a car’s transmission (predictor) and its miles per gallon (outcome)? Is there a significant difference in the average MPG between an automatic car or manual car? Are there other variables/predictors which signi...
5054 sym Python (7636 sym/25 pcs) 4 img
Economic and Public Health Impacts of Weather Events in the U.S.
Synopsis Storms and other severe weather events cause both public health and economic problems for communities and municipalities within the United States. Many severe events can result in fatalities, injuries, and property damage, and preventing such outcomes to the extent possible is a key concern. This project involves exploring the U.S. Natio...
3472 sym R (9987 sym/19 pcs) 3 img
Statistical Inference Course Project: Part 1
Overview This project will look at the exponential distribution in R and apply the Central Limit Theorem, as studied in this course. A simulation of 1000 averages of 40 exponential distributions will be analyzed. The mean, variance, and distribution of this simulation will be recorded. Simulations First let’s begin by creating our sample of 40...
2195 sym R (1679 sym/11 pcs) 3 img
Statistical Inference Course Project: Part 2
Overview This is the second part of the Statistical Inference Course Project. It will consist on basic inferential data analysis of the ToothGrowth data in the R datasets package. This data records the effect of vitamin C on tooth growth in guinea pigs. Loading the Data & Basic Exploratory Analysis library(plyr) library(dplyr) library(ggplot2)...
3073 sym R (3352 sym/13 pcs) 1 img
Regression Models Project - Mtcars Data
Executive Summary This project uses the mtcars data set to explore the relationship between miles per gallon (MPG; outcome) and transmission (am; predictor). The following questions will be explored: Is an automatic or manual transmission better for MPG? Quantify the MPG difference between automatic and manual transmissions. Exploratory analysi...
3776 sym R (5577 sym/23 pcs) 3 img
Practical Machine Learning Course Project
Executive Summary Using data collected from accelerometers, the goal of this project is to use machine learning algorithms learned from the Practical Machine Learning Course to predict “how (well)” a participant performed a certain exercise. Accelerometers were placed on the belt, forearm, arm, and dumbell of 6 participants. They were asked t...
3612 sym R (4086 sym/32 pcs) 1 img
Fukui City Leaflet Interactive Map
This is a map of Fukui City. I lived here for two years (2017-2019). Click on the icons to see where I lived and worked. You can also check out two of my favorite restaurants! Below is the code that created the map: library(leaflet) #create icon using Fukui City emblem fukui_icon <- makeIcon( iconUrl = "https://image.flaticon.com/icon...
222 sym R (1072 sym/1 pcs)
Developing Data Products Course Project Presentation
Developing Data Products Course Project: Shiny App Reproducible PresentationXimena Ramirez11/23/2020 Introduction There are many factors that can affect the mileage (miles per gallon/mpg) of an automobile. Using the mtcars dataset in the datasetspackage, a linear model was fit using the following variables: am : Transmission (automatic, manual...
999 sym R (718 sym/3 pcs)