Texas Instruments TI-89 Voyage 200, User Manual

Page: 564 / 1008

Statistics and Data Plots 564
• 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
Ê
89 1
92
Ê
91 1 89
95 3 91
95
Ë
95
Ë
95
Ë