Letx(j)refer to thexin ascending order forj= 1, 2, ...,n. Letw(j)refer to the corresponding weights ofx(j); if there are no weights,w(j)= 1. Let N =Σnj=1w(j). To obtain thepth percentile, which we will denote asx[p], we need to find the first indexisuch thatW(i)...
In a study measuring K-12 students’ academic performance, missing age values are not related to the students’ GPA scores. The missing age data can be imputed with a median age (for example, 16 to 18 for K-12 students) and move on with concluding the report without affecting its credibi...
2. STATA FILES You can import stata files to R via foreign package through the following command. # Activate the `foreign` library library(foreign) # Read Stata data into R mydata <- read.dta("") 3. SYSTAT FILES You can import Systat files to R via foreign package through the followin...
Second, as a substantive contribution, this study is the first to analyze empirically the impact of digital transformation on the market share–profitability relationship. We find that digital transformation significantly weakens the relationship between market share and profitability, questioning the ongoing...
How to customise colours to specific things Rcpp can't find sugar functions Problem with "bnlearn" package & string elements table by reading with excel (or readxl...) Can't add images to R Markdown file R HELP! PSO Package - "Error during wrapup: incorrect number of dimensions...
This paper uses the bootstrapped GSADF procedure to find explosive real estate price bubbles. A brief overview of this approach is presented below. The Augmented Dickey-Fuller regression, given in equation (1), forms the foundation of the GSADF test(1)ΔPt=αr1,r2+βr1,r2Pt−1+∑i=1k...
The continual reassessment method (CRM) is a model-based design for phase I trials, which aims to find the maximum tolerated dose (MTD) of a new therapy. The CRM has been shown to be more accurate in targeting the MTD than traditional rule-based approaches such as the 3 + 3 design...
In general, violin plots are a method of plotting numeric data and can be considered a combination of the box plot with a kernel density plot. In the violin plot, we can find the same information as in the box plots: median (a white dot on the violin plot) interquartile range (the ...
In these studies, the age structure of a country's population has merited some attention. For instance, Lakhan (Lakhan, 2014) and Starr & Nicolson (Starr and Nicolson, 2015) used median age to explore the relationship between the age-distribution of a population and the recycling rate of ...
In the United States, quant trading positions are most prevalent in big financial hubs such as New York and Chicago, and areas where hedge funds tend to cluster, such as Boston, Massachusetts, and Stamford, Connecticut. Globally, quant traders may find employment opportunities in major financial ...