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 custo

The correct answer is C. Calculate a low standard deviation on survey responses.. A low standard deviation (C) indicates that data points are clustered closely around the mean, meaning responses are consistent and reliable. If the standard deviation is low, the 90% positive result is stable and predictable - a larger sample would likely yield a similar result.

Data Analysis

Question

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?

Options

ACalculate a high variance on survey responses.
BCalculate the maximum range of the survey responses.
CCalculate a low standard deviation on survey responses.
DRemove any data more than 4 standard deviation from the mean.

How the community answered

(29 responses)

A
10% (3)
B
3% (1)
C
83% (24)
D
3% (1)

Explanation

A low standard deviation (C) indicates that data points are clustered closely around the mean, meaning responses are consistent and reliable. If the standard deviation is low, the 90% positive result is stable and predictable - a larger sample would likely yield a similar result. High variance (A) would indicate unreliable, scattered data. The maximum range (B) only measures the spread between the highest and lowest values and says nothing about the overall distribution's reliability. Removing data more than 4 standard deviations from the mean (D) addresses outlier removal but does not measure or predict reliability for a larger population.

Topics

#Statistical Methods#Standard Deviation#Data Reliability#Predictive Analytics

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