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The issue is that map loops over the columns and it is no longer a data.frame whereas levene_test expects a data.frame/tibble. According to ?levene_test

data - a data frame for evaluating the formula or a model

therefore, instead of using map_if directly, select the columns that are numeric (select(where(is.numeric))), get the column names (names), loop over those in map, select only the 'Treatment' and the looped column from the data, create the formula with reformulate and apply levene_test

In zombie_Click() you can get a reference to the Form from the sender itself:

I wonder if there is a way to have assumptions checks for ANOVA or t-tests? (like levene test and shapiro tests)

No. You can check out {performance} package to check model assumptions:

https://easystats.github.io/performance/reference/index.html#section-check-model-assumptions-or-properties

Also, I wonder if there is a way to automatically remove outliers when performing the inferential statistics?

No, this is not possible. {ggstatsplot} provides two ways to deal with outliers:

• visually highlight them (using outlier.tagging = TRUE) in plots
• use robust statistics (type = "robust"), which is robust to presence of outliers

Your data step produces only three different values for delay when copied and pasted into SAS Display Manager editor window.

Perhaps there is some non space character hiding in that "white" space that is causing the INPUT statement to get out of sync.

But why did you indent the CARDS statement and the lines of in-line data? Try formatting your code like this to reduce the risk of doing that.

You have to do it like this

Give this a go. I'm sure it could be done in a better way, but this might be able to help you get started. If this answers your question, please mark it as so.

Best of luck, NF

What is most likely is that your table [publish].[LCM_COMMON_HNB_WEEKLY_ACTUAL] has a different granularity (likely lower) than your table ANALYSE.LCM_COMMON_BUDGET_SALES so this what I would do:

1. Get to the same grain first - Country and Week. You should verify independently that the country weekly budget amounts meet expectations

How to implement this depends on whether the introductory page is the same for all participants or whether it should contain different data/graphics/information for every exam.

You can use exams2pdf(..., intro = ...).

intro: character. Either a single string with the path to a .tex file or a vector with with LaTeX code for optional introduction text on the first page of the exam.

Note that if this LaTeX code includes graphics (or other files) these need to be included with the full path because the LaTeX code is compiled in a different (temporary) directory.

If different data/graphics/information should be randomly generated for every exam, then the best way to implement this is to put it into the first question. You can emphasize the different roles of the materials by structuring the content of the "Question" environment in the first exercise, say:

• Starting with "General information" in bold.
• Then data/graphics/information.
• Then including "First question" in bold and/or a pagebreak, e.g., via \newpage.
• Then the actual first question.

If you do so, then the main deviation from your ideal structure is that the first itemized point "1." is at the beginning of the general information and not the actual first question. But I don't think it would be worth going through setting up a completely new type of "random intro text" for exams2nops().

If you want to emphasize this to the participants so that no one overlooks the first question, you can couple it with a general intro such as:

You can make the downloadGoogle function a promise function. More details can be found here. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise

Basically, you would have