HP 48g Graphing Calculator - Manual (Page 279)

To compute a
statistic for
one variable:
1. Press (r^fSTAT 1 OK to open the SINGLE-VARIABLE
STFfr I ST ICS form.
2. Enter or choose the data matrix containing the data for the
variable.
3. Highlight the COL.» field and enter the number of the column
containing the data for the variable.
4. Select either S.ar'‘iple or F L j p i j j . i o n in the TYPE» to indicate
which version of the statistic you need to compute.
5. Put check-marks in one or more of the statistic check-fields.
6. Press OK . A labeled result for each statistic is placed on the
stack.
To compyfa t. scscieiic ios ail vx^y-ibjes i'.'i curfent chTiii:
1. Press IVflR to display the single-variable statistics
command menu.
2. Press the menu key corresponding to the statistic you wish to
compute. For example, press MEFlH to compute all of the means
for each of the variables (columns) in the current statistics matrix.
The result is a vector whose elements are the means of each column
in the data matrix.
21
To
compute a median for each variable in the
current
data:
1. Type TEFlOH and press [ENTER) to place a copy of the built-in
EXAMPLES directory in the HOME directory.
2. Press [VAR) EXFH1 .PRGS riED I fl. The result is a vector
containing the medians for each variable (column) in the current
statistics matrix.
To draw
a
bar
plot
of the data for
a variable:
1. Use the SINGLE.....VARIABLE STATISTICS form to select the
current stausncs matrix and the column in that matrix containing
the data jmu wish to plot.
2. Press [ NXT) ok to accept the choices and return to the stack.
3. Press r^fswl PLOT BAR PL. to draw the bar plot using
autoscaliiig (see 23-19 for more details.).
Statistics and Data Analysis 21-7