Publications by Jay Lee
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https://www.kaggle.com/datasets/meirnizri/covid19-dataset https://www.kaggle.com/datasets/ronaldbotelho/nyc-covid-19-statistics dfSM <- read.csv("/Users/jaylee/Downloads/COVID-19_Daily_Counts_of_Cases__Hospitalizations__and_Deaths.csv") dfBG <- read.csv("/Users/jaylee/Downloads/Covid Data.csv") Certainly, receiving smaller datasets for analysis is ...
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https://www.kaggle.com/datasets/meirnizri/covid19-dataset https://www.kaggle.com/datasets/ronaldbotelho/nyc-covid-19-statistics dfSM <- read.csv("/Users/jaylee/Downloads/COVID-19_Daily_Counts_of_Cases__Hospitalizations__and_Deaths.csv") dfBG <- read.csv("/Users/jaylee/Downloads/Covid Data.csv") Certainly, receiving smaller datasets for analysis is ...
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1 This week, we’ll work out some Taylor Series expansions of popular functions. f (x) = (1−x) f (x) = ex f (x) = ln(1 + x) f(x)=x(1/2) For each function, only consider its valid ranges as indicated in the notes when you are computing the Taylor Series expansion. Please submit your assignment as an R- Markdown document. Taylor Series \[f(x)=\sum...
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the x is .8 or -.8 eq1<-function(x){x^2} eq2<-function(x){cos(x)} x<-seq(-1,1,by=.01) plot(x,eq1(x), type = "l") lines(x,eq2(x), type = "l")...
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the x is .8 or -.8 eq1<-function(x){x^2} eq2<-function(x){cos(x)} x<-seq(-1,1,by=.01) plot(x,eq1(x), type = "l") lines(x,eq2(x), type = "l") x=.8 eq3<-cos(x)-(x^2) eq4<--sin(x)-(2*x) x1<-x-(eq3/eq4) x1 ## [1] 0.8244704 eq3<-cos(x1)-(x1^2) eq4<--sin(x1)-(2*x1) x2<-x1-(eq3/eq4) x2 ## [1] 0.8241324 -x2 ## [1] -0.8241324...
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library(quantmod) ## Loading required package: xts ## Loading required package: zoo ## ## Attaching package: 'zoo' ## The following objects are masked from 'package:base': ## ## as.Date, as.Date.numeric ## Loading required package: TTR ## Registered S3 method overwritten by 'quantmod': ## method from ## as.zoo.data.frame zoo li...
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Using R, build a multiple regression model for data that interests you. Include in this model at least one quadratic term, one dichotomous term, and one dichotomous vs. quantitative interaction term. Interpret all coefficients. Conduct residual analysis. Was the linear model appropriate? Why or why not? Base on the residuals and fitted plot, it cl...
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Using R, build a regression model for data that interests you. Conduct residual analysis. Was the linear model appropriate? Why or why not? I pick a data related to exp and salary,I personally hope this is a linear regression. And I want to use plot to visualize the result. From the scatter plot we can see it has a linear regression since it has a ...
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From the following calculation, I found the VWAP is 80.65, sharpe ratio is 0.4278 and cumulative Alpha is -0.015. Lets look at the VWAP first. I have difficulty to get volume on yahoo finance. So I used the volume that i can get in my portfolio which is just 12 since i have only 1000 at the very beginning. symbol_name2 <- c("WWNPX") Then we pick t...
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From the following calculation, I found the VWAP is 80.65, sharpe ratio is 0.4278 and cumulative Alpha is -0.0152 symbol_name2 <- c("WWNPX") ## WWNPX ## 2023-08-31 82.57 ## 2023-09-01 83.26 ## 2023-09-05 80.12 ## 2023-09-06 80.77 ## 2023-09-07 80.96 ## 2023-09-08 81.34 ## 2023-09-11 78.44 ## 2023-09-12 80.42 ## 2023-09-13 79.30 ## 2023-0...
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