Posts about R language tutorial
R language Excel file
May 12, 2021 03:00 0 Comment R language tutorial
Install the xlsx package, Install the xlsx package, Validate and load the "xlsx" package, Enter as an xlsx file, Read the Excel file, Microsoft Excel is the most widely used spreadsheet program that stores .xls data .xlsx or other formats. T, he R language can use some excel-specific
R language CSV file
May 12, 2021 03:00 0 Comment R language tutorial
Get and set up the working directory, Get and set up the working directory, Enter as a CSV file, Read the CSV file, Analyze the CSV file, Write to the CSV file, In the R language, we can read data from files stored outside the R language environment. W, e can also write data to files that will be stored and ac
R language JSON file
May 12, 2021 03:00 0 Comment R language tutorial
Install the rjson package, Install the rjson package, Enter the data, Read the JSON file, Convert JSON to a data frame, JSON files store data as text in a human-readable format. J, ohnson represents JavaScript Object Notation. R, can use the rjson package to read the JS
R language Poisson returns
May 12, 2021 04:00 0 Comment R language tutorial
Grammar, Grammar, Cases, Create a regression model, Poisson regression includes regression models, where the response variable is in the form of a count rather than a fraction., For example, the number
R language Random forest algorithm
May 12, 2021 04:00 0 Comment R language tutorial
Install the R package, Install the R package, In the random forest approach, a large number of decision trees are created. E, ach observation is fed into each decision tree. T, he most common resu
R language decision tree
May 12, 2021 04:00 0 Comment R language tutorial
Install the R language pack, Install the R language pack, Grammar, Enter the data, Cases, A decision tree is a graph that represents the selection and its results in the form of a tree. T, he nodes in the figure represent events or selectio
R language Nonlinear least two times
May 12, 2021 04:00 0 Comment R language tutorial
Grammar, Grammar, Cases, When simulating real-world data for regression analysis, we observe that, in rare cases, the equations of the model are linear equations that give lin
R language time series analysis
May 12, 2021 04:00 0 Comment R language tutorial
Grammar, Grammar, Pre-processing of time series:, Time series modeling steps:, Cases, Different time intervals, Multi-time series, Time series is to arrange the uniform statistical values according to the order in which the time occurs, and the main purpose of time series analysis
R language co-variance analysis
May 12, 2021 04:00 0 Comment R language tutorial
Cases, Cases, Enter the data, Co-variance analysis, Compare the two models, We use regression analysis to create a model that describes the effect of variables on response variables in predictors. S, ometimes, if we have a cat
R language two-item distribution
May 12, 2021 04:00 0 Comment R language tutorial
dbinom（）, dbinom（）, pbinom（）, qbinom（）, rbinom（）, The two distribution models deal with the probability of success of events that find only two possible outcomes in a series of experiments. F, or exam
R language standard distribution
May 12, 2021 04:00 0 Comment R language tutorial
dnorm（）, dnorm（）, pnorm（）, qnorm（）, RNORM（）, In random collections of data from independent sources, the distribution of data is usually observed to be normal. T, his means that when we draw a gr
R language logical regression
May 12, 2021 04:00 0 Comment R language tutorial
Grammar, Grammar, Cases, Create a regression model, Logical, regression is a regression model in which the response variable (due variable) has a classification value such as True/False or 0/1. I, t is
R language multiple regression
May 12, 2021 04:00 0 Comment R language tutorial
lm() function, lm() function, Cases, Multiple regression is an extension of the relationship between linear regression to more than two variables. I, n a simple linear relationship, we ha
R Language Survival Analysis
May 12, 2021 05:00 0 Comment R language tutorial
Install the package, Install the package, Survival Analysis handles predicting when a particular event will occur. I, t is also known as failure time analysis or analysis of death time. F, or
R language card square test
May 12, 2021 05:00 0 Comment R language tutorial
Grammar, Grammar, Cases, The box-side, test is a statistical method for determining whether there is a significant correlation between two classification variables. T, hese tw