Publications by Shamecca Marshall
Data 605 - Final Exam
Problem 1: Business Risk and Revenue Modeling Context You are a data scientist working for a retail chain that models sales, inventory levels, and the impact of pricing and seasonality on revenue. Your task is to analyze various distributions that can describe sales variability and forecast potential revenue. Part 1: Empirical and Theoretical ...
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Data 605 - Homework 3
Problem 1: Transportation Safety Scenario I am a data analyst tasked with understanding the relationship between vehicle speed and distance. Using the provided dataset, I will analyze how speed affects distance, which can provide insights into vehicle depreciation and pricing trends. data("cars") head(cars) ## speed dist ## 1 4 2 #...
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Polynomial vs. Multiple Linear Regression: A Comprehensive Housing Market Analysis
Introduction The Brooklyn housing market is an interesting case of rapid price changes, reflecting broader shifts in the real estate market across New York City. As someone who grew up in Brooklyn, I’ve seen firsthand how the value of homes in my neighborhood has changed dramatically over the years. Gentrification, changing demographics, and ...
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Data 605 - Homework 1
Task 1 :Geometric Transformation of Shapes Using Matrix Multiplication Context: In computer graphics and data visualization, geometric transformations are fundamental. These transformations, such as translation, scaling, rotation, and reflection, can be applied to shapes to manipulate their appearance. Task: Create a simple shape (like a square...
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Data 621 - HW 1
Introduction How can I estimate the number of wins a baseball team will achieve in a season based on its performance data? In this report, I develop a linear model to address this question. The Moneyball dataset may provide insights into the key performance factors that contribute most to a team’s success in securing wins. Variables strongly ...
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Data 608 - Story 6
Objective The United Nations Food and Agriculture Organization publication, The State of Food Security and Nutrition in the World 2022 (https://www.fao.org/documents/card/en/c/cc0639en) might lead one to the conclusion that it’s an elsewhere problem. That the people who are suffering malnutrition and starvation are “elsewhere”, not in our bac...
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Data 608 - Story 7
Objective The US Geological Survey publishes a list of Strategic Minerals ( https://www.usgs.gov/news/national-news-release/us-geological-survey-releases-2022-list-critical-minerals ). Having a secure supply of these minerals is essential to our security and economic prosperity. However many of these minerals are sourced from outside of the US. Thi...
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Data 608 - Story 5
What Is The Effect Of The Earth’s Temperature on Cyclonic Storms? Historic data indicates that the occurrence and intensity of cyclonic storms (Hurricanes, Typhoons and Tornados) increases with the increased earth temperature. For this assignment you will need to tell this story to a non-technical audience (eg: a high-school earth science class)....
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Data 608 - Story 4
Objective I have introduced the term “Data Practitioner” as a generic job descriptor because we have so many different job role titles for individuals whose work activities overlap including Data Scientist, Data Engineer, Data Analyst, Business Analyst, Data Architect, etc. For this story we will answer the question, “How much do we get paid?...
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Document
library(tidyr) library(tidyverse) ## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ── ## ✔ dplyr 1.1.3 ✔ purrr 1.0.2 ## ✔ forcats 1.0.0 ✔ readr 2.1.4 ## ✔ ggplot2 3.4.4 ✔ stringr 1.5.0 ## ✔ lubridate 1.9.3 ✔ tibb...
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