{"id":2550,"date":"2021-06-08T18:44:05","date_gmt":"2021-06-08T18:44:05","guid":{"rendered":"https:\/\/ricovictor.com\/?p=2550"},"modified":"2026-01-29T21:47:17","modified_gmt":"2026-01-29T21:47:17","slug":"prueba-de-raiz-unitaria-de-dickey-fuller-en-r","status":"publish","type":"post","link":"https:\/\/ricovictor.com\/index.php\/2021\/06\/08\/prueba-de-raiz-unitaria-de-dickey-fuller-en-r\/","title":{"rendered":"Prueba de Raiz Unitaria de DICKEY FULLER en R"},"content":{"rendered":"\t\t
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El Test o Prueba de Dickey Fuller<\/strong> es una forma para determinar si existen ra\u00edces unitarias<\/strong> en las series de tiempo y por tanto comprobar la existencia de ESTACIONARIEDAD<\/strong>.<\/p>

En este tutorial vamos a explicar te\u00f3ricamente c\u00f3mo se crea la prueba,su sentido, y luego haremos un ejemplo pr\u00e1ctico usando las funciones de R.<\/p>

Adem\u00e1s pinchando en el bot\u00f3n puedes descargar el esquema-resumen que uso en el v\u00eddeo. Tambi\u00e9n m\u00e1s abajo tienes el c\u00f3digo R.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Codigo R<\/h2>

#video dickey fuller<\/p>

#install.packages(\u00abquantmod\u00bb)
library(quantmod)
#install.packages(\u00abtseries\u00bb)
library(tseries)
#install.packages(\u00abfImport\u00bb)
library(fImport)<\/p>

library(\u00abhttr\u00bb)<\/p>

library(RCurl)<\/p>

library(rjson)
#install.packages(\u00abparsedate\u00bb)
library(parsedate)
require(tseries)<\/p>

library(urca)<\/p>

getSymbols(\u00abLTC-USD\u00bb,quote=\u00bbClose\u00bb,from =\u00bb2016-01-01″,periodicity = \u00abdaily\u00bb)
getSymbols(\u00abBTC-USD\u00bb,quote=\u00bbClose\u00bb,from =\u00bb2016-01-01″,periodicity = \u00abdaily\u00bb)
getSymbols(\u00abETH-USD\u00bb,quote=\u00bbClose\u00bb,from =\u00bb2016-01-01″,periodicity = \u00abdaily\u00bb)
getSymbols(\u00abTHETA-USD\u00bb,quote=\u00bbClose\u00bb,from =\u00bb2016-01-01″,periodicity = \u00abdaily\u00bb)<\/p>

getSymbols(\u00abADA-USD\u00bb,quote=\u00bbClose\u00bb,from =\u00bb2016-01-01″,periodicity = \u00abdaily\u00bb)
getSymbols(\u00abETH-USD\u00bb,quote=\u00bbClose\u00bb,from =\u00bb2016-01-01″,periodicity = \u00abdaily\u00bb)<\/p>


plot(`BTC-USD`[,4],type=\u00bbl\u00bb)
plot(`ETH-USD`[,4],type=\u00bbl\u00bb)
plot(`LTC-USD`[,4],type=\u00bbl\u00bb)<\/p>

plot(`ADA-USD`[,4],type=\u00bbl\u00bb)
plot(`THETA-USD`[,4],type=\u00bbl\u00bb)<\/p>

\u00a0<\/p>

#### TEST DE DICKEY FULLER STANDARD<\/p>


p_litecoin<- na.omit(`LTC-USD`[,4])<\/p>

adf.test(p_litecoin,k=0) #type 2 cont +tend<\/p>


?adf.test<\/p>


# n\u00famero de datos 1982 +500
# valor critico -3.413 al 5%
# valor t -2.7863<\/p>


#compara el valor critico con el t<\/p>

# t> v_crit<\/p>

#Prueba de Dickey-Fuller<\/p>


#Con intercepto y constante<\/p>

y=ur.df(p_litecoin,type=\u00bbtrend\u00bb,lags=0)
summary(y)<\/p>

y@teststat
y@cval<\/p>

?ur.df<\/p>

### retornos la de serie<\/p>

d_litecoin<- na.omit(diff(log(p_litecoin)))<\/p>

plot(d_litecoin,type=\u00bbl\u00bb)<\/p>

y_ret=ur.df(d_litecoin,type=\u00bbtrend\u00bb,lags=0)
summary(y_ret)<\/p>

adf.test(d_litecoin,k=0)<\/p>

#con intercepto<\/p>


y_intercept=ur.df(p_litecoin, type=\u00bbdrift\u00bb,lags=0)
summary(y_intercept)<\/p>


#Sin tendencia y sin intercepto<\/p>

y_nada=ur.df(p_litecoin, type=\u00bbnone\u00bb,lags=0)
summary(y_nada)<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\tAprende Arbitraje Estad\u00edstico<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\tCurso GRATIS Multicointegraci\u00f3n en FOREX<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

El Test o Prueba de Dickey Fuller es una forma para determinar si existen ra\u00edces unitarias en las series de tiempo y por tanto comprobar la existencia de ESTACIONARIEDAD. En este tutorial vamos a explicar te\u00f3ricamente c\u00f3mo se crea la prueba,su sentido, y luego haremos un ejemplo pr\u00e1ctico usando las funciones de R. Adem\u00e1s pinchando …<\/p>\n

Prueba de Raiz Unitaria de DICKEY FULLER en R<\/span> Leer m\u00e1s »<\/a><\/p>\n","protected":false},"author":19,"featured_media":2556,"comment_status":"open","ping_status":"open","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[2],"tags":[],"yoast_head":"\nPrueba de Raiz Unitaria de DICKEY FULLER en R - V\u00edctor A. 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