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Exercise

Measuring coefficient (Cronbach's) alpha

Let's continue with our brand_rep_8 dataset. We've landed on this survey reflecting three dimensions with eight items, but for purposes of illustration let's add a ninth item to the mix. (You'll see why soon.) Let's investigate the internal reliability of this survey. This dataset is loaded as brand_rep_9.

psych and dplyr have been loaded into your environment.

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  • Print the standardized coefficient alpha of the brand_rep_9 survey. Does this survey indicate internal reliability?
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