1. Which of the following adds marginal sums to an existing table ? a) par() b) prop.table() c) addmargins() d) all of the mentioned AnswerAnswer: b [Reason:] prop.table() computes proportions from a contingency table. 2. Which of the following lists names of variables in a data.frame ? a) quantile() b) names() c) barchart() d) all…
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