HP HP-28S - Single-Sample Statistics; Finding the Mean

Return the data point for 1977 to ~DAT.
~--------------------~
,. . IL-- ___ I
Now enter the rest of the data (for 1978 and 1979) and check that
you entered all five data points.
CD 7.6,7.8,6 I+
CD 11.5,19.3,5.8 I +
Single-Sample Statistics
In this section you'll find the mean, standard deviation, and variance
of CPI, PPI, and UR. The data for CPI are contained in the first col-
umn of ~DAT, the data for PPI in the second column, and the data
for UR in the third column.
Display
the second row of the STAT menu.
~--------------------~
INEXTI 3:
2:
1: 5.00
IlIimGmmmDmIllGIlIIHIIillB
Here are the commands for mean, standard deviation, and variance.
Finding the Mean
Calculate the mean.
MEAN
3:
2: 5.00
1: [8.10 9.40 7.00 ]
IlIimGmmmDmIllGIlIIHIIillB
The mean for CPI is 8.1, for PPI is 9.4, and for UR is 7.
134 12: Statistics