Step 1
Given; In any data set, at least _ % the values lie within 3 standard deviations of the mean.
Step 2
In statistics, the empirical rule states that 99.7% of data occurs within three standard deviations of the mean within a normal distribution. Approximately 99.7% of the data lies within three standard deviations of the mean, that is, in the interval with endpoints ˉx±3s for samples and with endpoints μ±3σ for populations.
Thus the answer is;
In any data set, at least 99.7% of the values lie within 3 standard deviations of the mean.
Answer; 99.7%