stats vocab struggle lol

Question 1

stratum

Answer 1

part of the population which is being sampled

Question 2

block design

Answer 2

the arranging of experimental units that are similar to one another in groups

Question 3

cluster sample

Answer 3

the task of grouping a set of objects in such a way that objects in the same group (called a cluster) are more similar (in some sense) to each other than to those in other group

Question 4

stratified sample

Answer 4

divides the population into smaller groups, or strata, based on shared characteristics

Question 5

statistically significant

Answer 5

the claim that a result from data generated by testing or experimentation is likely to be attributable to a specific cause

Question 6

confounding

Answer 6

an unmeasured third variable that influences both the supposed cause and the supposed effect