- Question 19 marks
Discrete distribution: cumulative probability, expectation, variance and a linear change.
- Question 27 marks
Combine two groups' means and standard deviations, then add a constant.
- Question 314 marks
Modelling, correlation and regression from coded summary data.
- Question 44 marks
Union of events and conditional probability.
- Question 514 marks
Histogram heights, estimates, median, quartiles, skewness and a normal model.
- Question 614 marks
Normal distribution, a binomial probability, and σ from a percentage.
- Question 713 marks
Tree diagram without replacement, conditional probability and a quadratic in n.