High School

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You get on a scale three times within three minutes and you get the following readings: 145 pounds, 140 pounds, 152 pounds. You can say that this illustrates:

- Low validity
- High validity
- Low reliability
- High reliability

Answer :

This scenario illustrates A. low reliability.

The scenario described with the scale readings of 145 pounds, 140 pounds, and 152 pounds within three minutes illustrates the concept of reliability and validity in measurements.

Reliability refers to the consistency of a measurement. A measurement is considered reliable if it produces the same results under consistent conditions. In this case, the scale gives different readings (145, 140, and 152 pounds) within a short time frame, which indicates that the scale is not consistent in its measurement.

Validity refers to how accurately a measurement reflects the actual value it is supposed to measure. While the provided scenario does not give information about the actual correct weight, the inconsistency in readings already disqualifies the scale from being considered valid. For a scale to be valid, it first needs to be reliable.

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Rewritten by : Barada