Publications by Donald Butler
Math Bridge Week 3 Assignment
Exercise #1 The weights of steers in a herd are distributed normally. The variance is 40,000 and the mean steer weight is 1300 lbs. Find the probability that the weight of a randomly selected steer is greater than 979 lbs. round(pnorm(979,1400,sqrt(40000),lower.tail = FALSE),4) ## [1] 0.9824 Exercise #2 SVGA monitors manufactured by TSI Electron...
6988 sym R (1872 sym/70 pcs)
DATA 607 - Assignment Week 1
Introduction Data taken from Club Soccer Predictions on 08/27/2021 which forecasts and generates soccer power ratings for clubs in 39 leagues around the world. The project’s model evaluates the performance of each soccer club and assigns them three attributes; the number of goals scored against an average team, the number of goals allowed again...
1687 sym R (4654 sym/15 pcs)
DATA 607 - Assignment Week 3
library(tidyverse) Exercise 1 Using the 173 majors listed in fivethirtyeight.com’s College Majors dataset [https://fivethirtyeight.com/features/the-economic-guide-to-picking-a-college-major/], provide code that identifies the majors that contain either “DATA” or “STATISTICS” url = 'https://raw.githubusercontent.com/dab31415/DATA607/mai...
1984 sym R (2204 sym/20 pcs)
DATA 607 - Assignment Week 9
Introduction The New York Times web site provides a rich set of APIs, as described here: https://developer.nytimes.com/apis. Your task is to choose one of the New York Times APIs, construct an interface in R to read in the JSON data, and transform it into an R DataFrame. Setup API Key Request We created an account with the NYTimes and requested...
1684 sym R (5904 sym/9 pcs)
DATA 607 - Assignment Week 11
Credit Karma Credit Karma is a website that allows their members to monitor their credit score. They provide this information, along with regular updates, to their members for free. Who are the target users? Their target users are adults that want to monitor their credit history and scores to improve their financial situation. What are the key ...
1819 sym