Texas Instruments TITANIUM TI-89 User Manual page 564

• In the Data/Matrix Editor, you can enter the test scores and frequency values in two
columns.
Test Frequency
scores values
c1 c2
85 1
97 1
92 2
89 1
91 1
95 3
Ê
Frequency of 2
Ë
Frequency of 3
A frequency value of 0 effectively removes the data point from analysis.
Note:
To use frequency values, specify the frequency column when you perform a statistical
calculation or define a stat plot. For example:
Statistics and Data Plots
These weighted scores are
equivalent to the single column of
scores listed to the right.
c1
85
97
Ê
92
Ê
92
89
91
Ë
95
Ë
95
Ë
95
564