Examlex
____________________ can make it hard for a person to find the energy to enjoy hobbies or other leisure activities, or to complete simple tasks at home or at work, and it can lead to serious, life-threatening health complications.
Anecdotal Evidence
Information based on personal accounts, stories, or experiences, rather than on scientifically collected data or statistics.
Observational Study
A study wherein researchers observe and record data without manipulating any variables, in contrast to an experimental study.
Matched Pairs
A study design in which subjects are paired based on specific characteristics, with one in each pair receiving treatment and the other not.
Blocking
A technique in experimental design used to reduce the effects of nuisance variables by grouping subjects into blocks based on these variables.
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