Question

fill in the blank. for data sets having a distribution that is approximately bell - shaped, ________ states that about 68% of all data values fall within one standard deviation from the mean. for data sets having a distribution that is approximately bell - shaped, states that about 68% of all data values fall within one standard deviation from the mean. chebychevs theorem the round - off rule the empirical rule the range rule of thumb

Explanation:

The Empirical Rule applies to approximately bell - shaped (normal) distributions. It states that about 68% of data values fall within one standard deviation of the mean, about 95% within two standard deviations, and about 99.7% within three standard deviations. Chebychev's Theorem applies to any distribution. The Round - off Rule is about how to round numbers in calculations. The Range Rule of Thumb is related to estimating the standard deviation from the range.

Answer:

the Empirical Rule