13
.
ENG
Statistics Functions
The TI
-
25X Solar can perform statistical analysis on one-
variable data.
Key
Function
g
Enters the displayed number into the
statistics register as a data point.
`
z
Removes the displayed number from the
statistics register.
`
Calculates the mean of the entered data.
`
ƒ
Calculates the population standard deviation
of the entered data (
n
weighting).
`
‚
Calculates the sample standard deviation of
the entered data (
n
.
1 weighting).
`
ƒ
V
Calculates variance using
n
weighting (for
population data).
`
‚
V
Calculates variance using
n
.
1 weighting
(for sample data).
`
†
Calculates the sum of the entered data
points.
`
‡
Calculates the sum of the squares of the
entered data points.
`
[
CSR
]
Clears all data from the statistics register
and the STAT indicator.
