© 1999
T
EXAS
I
NSTRUMENTS
I
NCORPORATED
TI-30X
Ù
S: A Guide For Teachers
77
Viewing the Data
(Cont.)
u
Find the number of data points (
n
),
the mean (
v
)
,
the sample standard
deviation (
Sx
), the population
standard deviation (
s
x
), the sum of
the scores (
G
x
), and the sum of the
squares (
G
x
2
).
Press Display
u
n
v
Sx
s
x
¹
-
5.
STAT
DEG
"
n
v
Sx
s
x
¹
-
79.4
STAT
DEG
"
n
v
Sx
s
x
¹
---
16.39512123
STAT
DEG
"
n
v
Sx
s
x
¹
---
14.66424222
STAT
DEG
"
¸
G
x
G
x
2
---
397.
STAT
DEG
"
Continued
¸
G
x
G
x
2
2
---
32597.
STAT
DEG
