535 search results for "boxplot"

Scratching the Surface of Gender Biases

February 5, 2017
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Scratching the Surface of Gender Biases

Today, I want to share my analysis of the World Gender Statistics dataset. Last week I already introduced my Shiny app, where you can explore 160 measurements for 164 countries over 56 years. This week I’ve included a statistical analysis of these c...

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Quant Screening Backtesting: Turnaround Stocks

February 3, 2017
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Quant Screening Backtesting: Turnaround Stocks

Introduction: What are turnaround stocks? Turnaround investing is the process of looking for investment opportunities in down-and-out companies that are poised to experience a financial recovery. The post Quant Screening Backtesting: Turnaround Stocks appeared first on NYC Data Science Academy Blog.

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Superheat: supercharged heatmaps for R

February 3, 2017
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Superheat: supercharged heatmaps for R

The heatmap is a useful graphical tool in any data scientist's arsenal. It's a useful way of representing data that naturally aligns to numeric data in a 2-dimensional grid, where the value of each cell in the grid is represented by a color. It's a natural fit for data that's in a grid already (say, a correlation matrix). But...

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Hypothetical Outcome Plots

February 2, 2017
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Hypothetical Outcome Plots

suppressPackageStartupMessages(library(tidyverse)) # devtools::install_github("dgrtwo/gganimate") # install.packages("cowplot") library(gganimate) # install image magick in terminal >> "brew install image magick" If the Weatherman says that t...

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Data Science for Doctors – Part 1 : Data Display

January 29, 2017
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Data Science for Doctors – Part 1 : Data Display

Data science enhances people’s decision making. Doctors and researchers are making critical decisions every day, so it is obvious that those people must have a substantial knowledge of data science. This series aims to help people that are around medical field to enhance their data science skills. We will work with a health related database Related exercise sets:

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RcmdrPlugin.KMggplot2_0.2-4 is on CRAN

January 21, 2017
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RcmdrPlugin.KMggplot2_0.2-4 is on CRAN

RcmdrPlugin.KMggplot2 v0.2-4 (an Rcmdr plug-in; a GUI for 'ggplot2') was released on Dec. 20, 2016. RcmdrPlugin.KMggplot2 (CRAN) NEWS Changes in version 0.2-4 (2016-12-20) ggplot2 2.2.0 was supported. Added ggplot2's colour/fill scales (scale_hue, scale_grey). New plot: Beeswarm plot in Box plot (Th…

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Does seasonally adjusting first help forecasting?

January 21, 2017
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Does seasonally adjusting first help forecasting?

The experiment A colleague at work was working with a time series where one got quite different results depending on whether one seasonally adjusted it first, or treated the seasonality as part of a SARIMA (seasonal auto-regressive integrated moving av...

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Using R to download high frequency trade data directly from Bovespa

January 18, 2017
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Using R to download high frequency trade data directly from Bovespa

Using package GetHFData - Recently, Bovespa, the Brazilian financial exchange company, allowed external access to its ftp site. In this address one can find several information regarding the Brazilian financial system, including d...

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Simulation of empirical Bayesian methods (using baseball statistics)

January 11, 2017
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Simulation of empirical Bayesian methods (using baseball statistics)

Previously in this series: The beta distribution Empirical Bayes estimation Credible intervals The Bayesian approach to false discovery rates Bayesian A/B testing Beta-binomial regression Understanding empirical Bayesian hierarchical modeling Mixture models and expectation-maximization The ebbr package We’re approaching the end of this series on...

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Ranking Brad Pitt’s Movies in R

Ranking Brad Pitt’s Movies in R

So I saw this blog post, in which Pretty Famous ranked every one of Brad Pitt’s movies (I have no idea how I came across it, I’m not particularly a movie buff or a fan of Señor Pitt, but anyway). Then I wondered how easy/hard it would be to do something like that in R. Pretty Famous used a...

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