Texas Instruments TI-Nspire CX CAS TINSPIRE-CX-CAS 产品宣传页
产品代码
TINSPIRE-CX-CAS
Two-Variable Statistics (TwoVar)
Analyzes paired data.
List 1
is the independent variable.
List 2
is the
dependent variable. You can specify an optional frequency list. The statistical
data returned using this analysis technique are:
data returned using this analysis technique are:
For each list:
•
Sample mean, x or y
•
Sum of the data, G
x
or G
y
•
Sum of the squared data, G
x
2
or G
y
2
•
Sample standard deviation, sx = s
n-1
x or sy = s
n-1
y
•
Population standard deviation, sx = s
n
x or sy = s
n
y
•
X-min or Y-min
•
First quartile, Q
1
X or Q
1
Y
•
Median
•
Third quartile, Q
3
X or Q
3
Y
•
X-max or Y-max
•
Sum of squared deviations, SSx = G(
x
Nx)
2
or SSy = G(
y
Ny)
2
Additional data:
•
Sample size for each data set, n
•
G
xy
•
Correlation coefficient, R.
Linear Regression (mx+b) (LinRegMx)
Fits the model equation y=ax+b to the data using a least-squares fit. It displays
values for
values for
m
(slope) and
b
(y-intercept).
Linear Regression (a+bx) (LinRegBx)
Fits the model equation y=a+bx to the data using a least-squares fit. It displays
values for
values for
a
(y-intercept),
b
(slope),
r
2, and
r
.
Median-Median Line (MedMed)
Fits the model equation y=mx+b to the data using the median-median line
(resistant line) technique, calculating the summary points x1, y1, x2, y2, x3, and
y3.
(resistant line) technique, calculating the summary points x1, y1, x2, y2, x3, and
y3.
Median-Median Line
displays values for
m
(slope) and
b
(y-intercept).
Lists & Spreadsheet Application 339