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