Question 1
For A:8 Visual/4 Text, B:4 Visual/8 Text, calculate each group's Visual percentage.
Show your reasoning and explicitly state limitations. Written solutions are assessed by an instructor; the answer key is kept private.
Written problem set
Question 2
Find the expected A–Visual count under independence (N=24).
Question 3
With observed 8,4,4,8 and expected 6 per cell, calculate chi-square and df.
Question 4
Write a bounded statement about whether this table demonstrates causality.
Scoring
Each task: concept 2, application/calculation 2, bounded interpretation 1. Not official UCL marking.
Formative self-check
These are public learning checks, not private written assignment solutions.