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Assuming that 'Subscale' is the column name, the x for alpha should be either a data.frame or matrix . An option is to group_split into a ... ... <看更多>

Details. The Cronbach's Alpha value for x . A value closer to 1 indicates greater internal consistency, where usually following rule of thumb is applied to ... ... <看更多>

Regular alpha is based on covariances. Standardized alpha is based on correlations (which can be thought of as based on standardized ... ... <看更多>