A customer survey reveals 90% positive feedback. Which of the following statistical methods would be best to utilize to determine the reliability of a data set and predict how a larger sample of customers over the same time period might respond?
A.
Calculate a high variance on survey responses.
B.
Calculate the maximum range of the survey responses.
C.
Calculate a low standard deviation on survey responses.
D.
Remove any data more than 4 standard deviation from the mean.
A low standard deviation in survey responses indicates that the data points tend to be close to the mean, suggesting a high level of consistency among the responses. This consistency is crucial for determining the reliability of the data set and predicting future outcomes. If the standard deviation is low, it means that the positive feedback is not only high but also consistent, making it a reliable indicator of customer satisfaction and a good predictor of how a larger sample might respond.
[References: The concept of using standard deviation to assess data reliability is a standard practice in statistics and data analysis123., , , , ]
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