AP Stats Chapter 4

Réussis tes devoirs et examens dès maintenant avec Quizwiz!

voluntary response bias

bias introduced to a sample when individuals can choose on their own whether to participate in the sample

nonresponse bias

bias introduced when a large fraction of those sampled fails to respond

The principle reason for the use of random assignment in designing experiments is that it

creates approximately equal groups for comparison.

The principle reason for the use of controls in designing experiments is that it

distinguishes a treatment effect from the effects of confounding variables.

response bias

leading questions, social desirability

undercoverage

occurs when some groups in the population are left out of the process of choosing the sample

Three factors of good experimental design

randomness, comparison, replication

The reason that blocking (as in a randomized block design) is sometimes used in experimentation is to

reduce variability arising from random assignment.

The principle reason for replication in designing experiments is that it

reduces sampling variability.

random allocation

to eliminate bias in the sampling process

comparison

to reduce the effect of lurking variables

blocking

to reduce variability between subjects in an experimental design

stratified random sampling does for the sampling process what

blocking does for the experimental design


Ensembles d'études connexes

NUR 354- Pharmacology, Practice for Exam 3

View Set

Chapter 6 Exam - Markets and Social Security

View Set

Optimal Prize, Deadweight Loss, Patents, Consumer Surplus, Market Shares, Cartel Detection, Government Research, Patents Duration, Tie-in Sales, Auction Types, Two-part Tariff, Bertrand Model, Cournot Model, Oligopoly Assumptions, Quota Impact, Cartel...

View Set

Utah Life and Health Exam- Chapter 9: Disability Income and Related Insurance

View Set

CYBERSECURITY final guide - copied

View Set

History of Photo E1 Terms/Main Reading Arguments

View Set

IELTS WRITING TASK 2: Example conclusion phrases

View Set