Which of the following is a highly useful statistic in which plus or minus one standard deviation always equals 68 percent of a normal curve?
A)Variance
B)Standard deviation
C)Mode
D)Range

Question

Quizplus · Accepted Answer

Standard deviation is a measure of the amount of variation or dispersion in a set of values. In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean, making it a highly useful statistic for understanding the spread of data.

Which of the Following Is a Highly Useful Statistic in Which