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Numbas Error: Error making HTML in Question 1 Statement: Error in user-defined javascript function table2: Failed to execute 'appendChild' on 'Node': parameter 1 is not of type 'Node'.
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at new Numbas.Error (https://numbas.mathcentre.ac.uk/numbas-previews/en-GB/question-51876-brad-s-copy-of-perform-chi-squared-test-for-differences-in-preferences/scripts.js?build_time=1742038708.702947:75:13)
at https://numbas.mathcentre.ac.uk/numbas-previews/en-GB/question-51876-brad-s-copy-of-perform-chi-squared-test-for-differences-in-preferences/scripts.js?build_time=1742038708.702947:6190:38
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