If a particular set of data is approximately normally distributed, we would find that
Approximately
A) 2 of every 3 observations would fall between 1 standard deviation around the mean.
B) 4 of every 5 observations would fall between 1.28 standard deviations around the mean.
C) 19 of every 20 observations would fall between 2 standard deviations around the mean.
D) All the above.

Question

Quizplus · Accepted Answer

All the statements are correct based on the properties of a normal distribution: A) 68% of data falls within 1 standard deviation, B) 80% within 1.28 standard deviations, and C) 95% within 2 standard deviations.

If a Particular Set of Data Is Approximately Normally Distributed