The following diagram shows the distribution of data that is called "normal."
c support
- 952 within -
z standard deviations
62 within
standard
deviation
1352
1352
7+3 7+2
1-
2
1-
s
you may use the diagram to answer the following questions regarding 'normal' data.
for normal data:
a: about what percent of data is within 1 standard deviation of the mean?
b: about what percent of data is within the mean and 2 standard deviations above the mean?
c: about what percent of data is more than 2 standard deviations above the mean?