random

Question 1

what is relative frequency

Answer 1

subgroup count / total count

Question 2

what is the difference between cluster sampling and stratified sampling?

Answer 2

Stratified sampling: individuals are divided into homogenious groups and then an equal number are taken from each group/strata. exclusive groups with no one left out and no overlapping.

Cluster sampling: members are already in naturally occurring groups. Subjects are selected as an entire randomly selected group, not as individuals from a group.

Question 3

Conditional probability, in a 52 card deck, what is the probability that the 2nd card drawn is a heart when the first was a spade? Cards were drawn randomly, no replacements between

Answer 3

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