Chapter 3: Probability and applications

Question 1

what is ‘realisation’?

Answer 1

the observed outcome

Question 2

what are contingency tables

Answer 2

the data counterparts of probability tables. where the probabilities are replaced by frequency

Question 3

how can we measure probability: explain the terms symmetry, long term relative frequency, population proportion, subjective assessment and a statistical model

Answer 3

1. symmetry: knowing that we have a deck of 52 cards, since half are red, the other half must be black
2. long term relative frequency, we repeat the experiment multiple times
3. population proportion: collect sample and note how many have the trait so we can generalise to the population
4. subjective assessment is expert advice
5. a statistical model is collecting data and following a model and check information from the model