Dear R-users, I want to estimate ARCH test for multiple columns (i.e., from 2:21 COLUMNS ) in my data. For this purpose, I want to run a loop to calculate ARCH test results for each column in the data frame. I tried by using for loop and lapply function, but unable to write a loop for computing the ARCH test simultaneously for each column (i.e., from 2:21 columns) of my data frame.
Below is my ARCH test code which I want to estimate for multiple columns of the data frame in a loop. library(tseries) library(FinTS) ArchTest (A, lags=1, demean = FALSE) Hence, A is a vector for which the ARCH test result is calculated. Here, I want to write a loop so that the ArchTest can be calculated simultaneously for each column of my data frame. From ARCH test result, I require only the calculated Chi-square value and its p-value for each column that stored in another matrix or object for each column as an output file. For your convenience, I attached my sample data below. Please find it. Please help me for which I shall be always grateful to you. Thank you. -- *Best Regards,* *Subhamitra Patra* *Phd. Research Scholar* *Department of Humanities and Social Sciences* *Indian Institute of Technology, Kharagpur* *INDIA* [image: Mailtrack] <https://mailtrack.io?utm_source=gmail&utm_medium=signature&utm_campaign=signaturevirality5&;> Sender notified by Mailtrack <https://mailtrack.io?utm_source=gmail&utm_medium=signature&utm_campaign=signaturevirality5&;> 05/07/20, 05:51:03 PM ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
