Question

A researcher writes down in a notebook the arrival times of different city buses at a...

A researcher writes down in a notebook the arrival times of different city buses at a bus stop during different weather conditions. Which kind of study is this?

observational

survey

single-blind experiment

double-blind experiment

Math   Statistics-And-Probability   
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Answer #1

Sol:

it cannot be single-blind experiment  or it cannot be double-blind experiment as its not experiment

single blinded means patient or evaluator(either of one is blinded as to intervention

double blinded means neither patient nor outcome evaluator knows Rx to which patient was assigned.

it is not survey as the primary data collection method based on communication with a representative sample of individuals.

IT IS AN OBSERVATION SINCE SYSTEMATIC PROCESS OF RECORDING BEHAVIOURIAL PATTERNS OF PEOPLE,OBJECTS AND OCCURRENCES WITHOUT QUESTIONING OR COMMUNICATING WITH THEM.

ANSWER:OBSERVATIONAL

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