If a particular batch 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 of the above are true.
Answer:D
If a particular batch 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 of the above are true.