19990401
k
k
k
k
k
Linear Regression Graph
Linear regression uses the method of least squares to plot a straight line that passes close to
as many data points as possible, and returns values for the slope and
y
- intercept
(
y
-coordinate when
x
= 0) of the line.
The graphic representation of this relationship is a linear regression graph.
4
(CALC)
c
(Linear)
6
(DRAW)
The following is the linear regression model formula.
y
=
ax
+
b
a
............. regression coefficient (slope)
b
............. regression constant term (intercept)
r
............. correlation coefficient
r
2
............ coefficient of determination
k
k
k
k
k
Med-Med Graph
When it is suspected that there are a number of extreme values, a Med-Med graph can be
used in place of the least squares method. This is similar to linear regression, but it
minimizes the effects of extreme values.
4
(CALC)
d
(MedMed)
6
(DRAW)
The following is the Med-Med graph model formula.
y
=
ax
+
b
a .............
Med-Med graph slope
b .............
Med-Med graph intercept
6-3-6
Calculating and Graphing Paired-Variable Statistical Data
# Input a positive integer for frequency data.
Other types of values (decimals, etc.) cause
an error.
Summary of Contents for ALGEBRA FX 2.0
Page 1: ... ALGEBRA FX 2 0 User s Guide ...
Page 19: ...19990401 ALGEBRA FX 2 0 ...
Page 26: ...19990401 1 1 Keys 1 1 1 Keys REPLAY COPY PASTE CAT CAL H COPY PRGM List Mat i ...
Page 122: ...19990401 ...
Page 280: ...19990401 ...
Page 310: ...19990401 ...
Page 358: ...19990401 8 8 2 Program Library egcw w ww w ...
Page 360: ...19990401 8 8 4 Program Library Example 1 Example 2 fw baw bf w fw baw ca w ...
Page 362: ...19990401 8 8 6 Program Library ...
Page 364: ...19990401 8 8 8 Program Library dw fcde wfcde wfcde fcde w daw w ...
Page 366: ...19990401 8 8 10 Program Library b awaw bwaw aw9d w ...
Page 423: ...19981001 MEMO ...
Page 424: ...19981001 MEMO ...
Page 425: ...19981001 MEMO ...