A 3-point scale generally offers weaker reliability when gathering data. For collecting views or opinions, a 5-point or 7-point scale is often more effective, as it tends to enhance the reliability and validity of the data.

In measurement and evaluation, a five-point measurement scale is often the best because it provides an impartial range of options for respondents, allowing for adequate expression of understanding of different opinions while remaining simple enough for respondents to answer accurately, leading to higher quality data and better analysis results compared to scales with fewer points.

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