Question

question 13 of 25
in a normal distribution, 68% of the data fall within how many standard deviations of the mean?
a. it cannot be determined from the given information.
b. one standard deviation
c. two standard deviations
d. three standard deviations

Explanation:

The empirical rule for normal distributions states that approximately 68% of data lies within 1 standard deviation of the mean ($\mu \pm \sigma$), 95% within 2, and 99.7% within 3. This is a fundamental property of normal distributions.

Answer:

B. One standard deviation