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We want to check if girls are really more anxious for exams than boys. We take a sample of 10 boys and 10 girls. We ask them right before they start the exam how anxious they are. They have to give a value between 0 and 9. To know which test we need we have to answer the 6 questions. First question: what type of data is this?
Dependent or independent?
How to check if the data are normally distributed?
How to check if the two groups have equal spreads?
Which test do you use to compare boys and girls?