Exercise

Extracting and choosing the number of factors

Now, it is time to follow the next two steps; namely, to initially extract factors and then decide how many of them express the underlying patterns. For this exercise, we have loaded the correlation matrix object, sdt_polychoric, for you.

Instructions 1/3

XP

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Apply the scree test and the Kaiser-Guttman criterion on sdt_polychoric.

Take Hint (-10 XP)