Texas Instruments TI-82 STATS User Manual

12–24 Statistics
82D315~1.DOC TI-83 international English Bob Fedorisko Revised: 10/26/05 1:36 PM Printed: 10/27/05 2:53
PM Page 24 of 38
To display the STAT CALC menu, press … ~.
EDIT CALC TESTS
1: 1-Var Stats Calculates 1-variable statistics.
2: 2-Var Stats Calculates 2-variable statistics.
3: Med-Med Calculates a median-median line.
4: LinReg(ax+b) Fits a linear model to data.
5: QuadReg Fits a quadratic model to data.
6: CubicReg Fits a cubic model to data.
7: QuartReg Fits a quartic model to data.
8: LinReg(a+bx) Fits a linear model to data.
9: LnReg Fits a logarithmic model to data.
0: ExpReg Fits an exponential model to data.
A: PwrReg Fits a power model to data.
B: Logistic Fits a logistic model to data.
C: SinReg Fits a sinusoidal model to data.
For each
STAT CALC menu item, if neither Xlistname nor
Ylistname is specified, then the default list names are
L1 and L2.
If you do not specify freqlist, then the default is
1 occurrence of
each list element.
For most
STAT CALC menu items, you can specify a list of data
occurrences, or frequencies (freqlist).
Each element in freqlist indicates how many times the
corresponding data point or data pair occurs in the data set you
are analyzing.
For example, if
L1={15,12,9,14} and Ù
ÙÙ
ÙFREQ={1,4,1,3}, then the
TI-82 STATS interprets the instruction
1.Var Stats L1, Ù
ÙÙ
ÙFREQ
to mean that 15 occurs once, 12 occurs four times, 9 occurs
once, and
14 occurs three times.
Each element in freqlist must be ‚ 0, and at least one element
must be > 0.
Noninteger freqlist elements are valid. This is useful when
entering frequencies expressed as percentages or parts that add
up to 1. However, if freqlist contains noninteger frequencies,
Sx
and Sy are undefined; values are not displayed for Sx and Sy in
the statistical results.
STAT CALC Menu
STAT CALC
Menu
Frequency of
Occurrence for
Data Points

Texas Instruments TI-82 STATS Specifications

General

Brand	Texas Instruments
Model	TI-82 STATS
Category	Calculator
Language	English