arch.test : getting message function not found

General
1

I am getting 'function not found' error for arch.test function. library rugarch is loaded.

What could be the issue?

2

I know nothing about the rugarch package, but I searched its reference manual for the string "arch.test" and I didn't find it. Are you sure you are using the correct function name?

3

Are you sure you are using the correct package? There seems to be an arch.test in the {nortsTest} package

4

arch.test is the function to test whether ARCH effects are present in the ARIMA residuals.

5

https://search.r-project.org/CRAN/refmans/nortsTest/html/arch.test.html

6

You mention the package rugarch in your first post but the function is in the package nortsTest. Have you run library(nortsTest)?

7

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