Stats Year 1 C1

Question 1

simple random sample

Answer 1

every sample of size n has an equal chance of being selected

Question 2

systematic sampling

Answer 2

elements chosen at regular intervals from ordered list

Question 3

stratified sampling

Answer 3

population divided into mutually exclusive strata (eg male and femal) and random sample taken from each

Question 4

quota sampling

Answer 4

researcher selects sample that reflects characteristics of whole population

Question 5

opportunity sampling

Answer 5

sample of people available at time who fit criteria

Question 6

continuous variable

Answer 6

can take any value in a given range

Question 7

discrete variable

Answer 7

only specific values in a given range