Publications by Ethan Robbins
Quiz 1
# Load packages library(tidyquant) library(tidyverse) # for count() function # Import S&P500 Stock Index SP500 <- tq_index("SP500") SP500 ## # A tibble: 505 x 8 ## symbol company identifier sedol weight sector shares_held local_currency ## <chr> <chr> <chr> <chr> <dbl> <chr> <dbl> <chr> ## 1 AAP...
902 sym R (1736 sym/4 pcs)
Quiz 1
Q1 What is R? R is a computer programming language. Q2 What is RStudio? Rstudio is a platform that comes with R. Q3 What is R packages? R packages are sets and groups of coding. Q4 What about code? summary(cars) ...
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QUIZ 3
For this quiz, you are going to use orange juice data. This data set is originally used in a machine learning (ML) class, with the goal to predict which of the two brands of orange juices the customers bought. Of course, you are not building a ML algorithm in this quiz. I just wanted to provide you with the context of the data. The response varia...
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Quiz 2
# Load the package library(tidyverse) # Import data Orange <- read.csv('https://raw.githubusercontent.com/selva86/datasets/master/orange_juice_withmissing.csv', stringsAsFactors = TRUE) %>% mutate(STORE = as.factor(STORE), StoreID = as.factor(StoreID)) # Print the first 6 rows head(Orange) ## Purchase WeekofPurchase StoreID ...
1056 sym R (5571 sym/7 pcs)
Quiz 4
For this quiz, you are going to use orange juice data. This data set is originally used in a machine learning (ML) class, with the goal to predict which of the two brands of orange juices the customers bought. Of course, you are not building a ML algorithm in this quiz. I just wanted to provide you with the context of the data. The response varia...
2947 sym R (5789 sym/12 pcs) 1 img
Term Paper
Choose one of David Robinson’s tidytuesday screencasts, watch the video, and summarise. https://www.youtube.com/channel/UCeiiqmVK07qhY-wvg3IZiZQ Instructions You must follow the instructions below to get credits for this assignment. Elaborate your answer. One or two sentence answers won’t get credit. Make sure to cite what you see and hear ...
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Quiz 6
For this quiz, you are going to use mpg (miles per galon) dataset. This dataset contains a subset of the fuel economy data that the EPA makes available on http: //fueleconomy.gov. It contains only models which had a new release every year between 1999 and 2008 - this was used as a proxy for the popularity of the car. The dataset has the following...
1857 sym R (3727 sym/22 pcs)