Currently interact is unable to show aggregate data on questions for quizzes that have branching logic enabled (I.E. How many people answered each question each way). 

The reason for this is that within branching logic quizzes it's possible for the same question to appear twice, which would skew the data for the responses on that question since the same person could answer the same question twice at different points in the quiz. 

We are exploring options for how to display this data in the future

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