Publications by Jacob Martin
DS 1870: Module 4.2 Homework - Spring 2025 - Key
Question 1 Blackjack is a card game where the player goes up against the dealer (not other players). A round of blackjack can end in one of three ways: “player” wins, “dealer” wins, or a “push” (tie). The goal of blackjack is to try to get as close of a point total of 21 as possible without going over (called a bust). If the player i...
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DS 1870: Module 4 Lab - Key
knitr::opts_chunk$set(echo = T, #warning = F, #message = F, fig.align = "center") # Load the tidyverse, skimr, and gt packages pacman::p_load(tidyverse, skimr, gt) Instructions: Make sure that the methods you use in this assignment use the different methods we’ve learned i...
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DS 1870: Module 4 Lab - Graphs
knitr::opts_chunk$set(echo = F, #warning = F, #message = F, fig.align = "center") # Load the tidyverse, skimr, and gt packages pacman::p_load(tidyverse, skimr, gt) Instructions: Make sure that the methods you use in this assignment use the different methods we’ve learned i...
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DS 1870: Module 4.2 Homework Results - SP 25
Question 1 Blackjack is a card game where the player goes up against the dealer (not other players). A round of blackjack can end in one of three ways: “player” wins, “dealer” wins, or a “push” (tie). The goal of blackjack is to try to get as close of a point total of 21 as possible without going over (called a bust). If the player i...
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DS 1870: Module 4 Homework - Part 1 Graphs
Data Description The babynames data set has the number of babies assigned each first name (with at least 10 babies per year). The columns in the data are: sex: The sex of the child assigned at birth (either ‘F’ or ‘M’) year: the year (1910 - 2023) name: The first name assigned count: The number of babies assigned the name for that year...
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DS 1870: Homework 3.2 - Spring 2025 - key
If a question asks for any calculations (means, medians, tables, proportions, etc…) or graphs, make sure they appear in the knitted document The final document should not show any warnings Question 1: Bones Data set See Brightspace for a description of the data. It’s the same data set as the homework for module 3 homework part 1. Part 1a: ...
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DS 1870 - Homework 3.1 Solutions - Sp 2025
See the Brightspace post for a description of the data. If a question asks for any calculations (means, medians, tables, proportions, etc…) or graphs, make sure they appear in the knitted document The final document should not show any warnings Question 1: Skimming the data set Skim the data set. skim(bones) Data summary Name bones Number o...
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STAT 5230: Homework 1 Key - Spring 2025
MLB Batting Data The dataset mlb batting.csv has information on all the batting results for 314 MLB players for the 2023 season that played in at least 50 games. There are 10 variables in the data. First is player number (row_num), which you can ignore for now. Question 1: Summary Stats Mean vector \(\bar{\textbf{y}}\) mlb |> #removing row...
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DS 1870: Homework 2.2 key - spring 2025
knitr::opts_chunk$set(echo = TRUE, fig.align = "center") # Load the tidyverse and gt packages pacman::p_load(tidyverse, gt) The supers2.csv file has 12 variables on 1899 superheroes from Marvel and DC Comics. We will focus on 3 variables: Alignment: If the character is considered a “Good Guy” (Good), Neutral (Neutra...
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STAT 5230: Lab 2 Solutions
The data for Practice 2 has national track records of 55 countries and 8 difference track races. The meter100, meter200, and meter400 are recorded in seconds The meter800, meter1500, meter5000, meter10000, and Marathon are measured in minutes. Question 1: PCA with the Covariance Matrix The first set of questions will be performing PCA using th...
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