Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
College Test Prep
/
LSAT
/
Random Assignment versus Random Sampling
Grade Level
LSAT
LR.097 Random Assignment versus Random Sampling
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
Which statement would be the best LSAT-style criticism or clarification of the reasoning?
A
Because assignment to a later school start time or the usual start time used chance, the enrolled volunteers must be representative of all high school juniors in a district.
B
Random assignment chiefly solves the problem of population coverage; causal comparison depends instead on random sampling.
C
Random assignment can make the later school start time and the usual start time groups comparable for causal inference among enrolled participants, but it does not show that the volunteer sample represents all high school juniors in a district.
D
A volunteer experiment cannot support any causal inference even when the conditions are assigned by chance.
E
The study would become representative merely by assigning an equal number of participants to each condition.
Submit Answer
