Publications by Warner Alexis
Data 622 EDA
Exploratory analysis and essay The data is related to direct marketing campaigns conducted by a Portuguese banking institution. These campaigns were executed via phone calls, with multiple contacts often made to the same client to assess whether they would subscribe to a bank term deposit. The dataset used for this analysis is bank-full.csv, wh...
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Data 624 Homework 4
Data Preprocessing Exercise 3.1 The UC Irvine Machine Learning Repository6 contains a data set related to glass identification. The data consist of 214 glass samples labeled as one of seven class categories. There are nine predictors, including the refractive index and percentages of eight elements: Na, Mg, Al, Si, K, Ca, Ba, and Fe. Using vi...
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DATA 624 Homework 3
Homework 3 Excercise 5.1 Produce forecasts for the following series using whichever of NAIVE(y), SNAIVE(y) or RW(y ~ drift()) is more appropriate in each case: Australian Population (global_economy) Bricks (aus_production) NSW Lambs (aus_livestock) Household wealth (hh_budget). Australian takeaway food turnover (aus_retail). Australian Populatio...
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Data 624 Homework 2 Updated fpp3
Time Series Decomposition Excercise 3.1 Consider the GDP information in global_economy. Plot the GDP per capita for each country over time. Which country has the highest GDP per capita? How has this changed over time? ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attach...
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DATA 624 Homework 2
The Forcaster Toolbox Excercise 3.1 For the following series, find an appropriate Box-Cox transformation in order to stabilise the variance. usnetelec usgdp mcopper enplanements ## Registered S3 method overwritten by 'tsibble': ## method from ## as_tibble.grouped_df dplyr ## ## Attaching package: 'tsibble' ## The following...
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Data 624 Homework 1
Problem 2.1 Explore the following four time series: Bricks from aus_production, Lynx from pelt, Close$ from gafa_stock, Demand from vic_elec. Use ? (or help()) to find out about the data in each series. What is the time interval of each series? Use autoplot() to produce a time plot of each series. For the last plot, modify the axis labels and...
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Data 608 Story 7
Story 7 : Where Do Strategic Minerals Come From? 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 mineral...
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Story 3 Update DATA 608
Story -3 : Do stricter gun laws reduce firearm gun deaths? The CDC publishes firearm mortality for each State per 100,000 persons https://www.cdc.gov/nchs/pressroom/sosmap/firearm_mortality/firearm.htm. Each State’ firearm control laws can be categorized as very strict to very lax. The purpose of this Story is to answer the question, ” Do s...
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DATA 608 Story 3
Story -3 : Do stricter gun laws reduce firearm gun deaths? The CDC publishes firearm mortality for each State per 100,000 persons https://www.cdc.gov/nchs/pressroom/sosmap/firearm_mortality/firearm.htm. Each State’ firearm control laws can be categorized as very strict to very lax. The purpose of this Story is to answer the question, ” Do s...
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DATA 608 - Story 2
Story - 2 : Can the FED Control Inflation and Maintain Full Employment I am usimng fedr package to use API to get the Economic Data for this assignment. The API is public and very easy to set up the connection. Instruction avalilable on how to load the data here https://github.com/sboysel/fredr # load library library(fredr) library(fredr) l...
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