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114
Chapter 7
Statistical Graphs and Calculations
4. Calculating and Graphing Paired-
Variable Statistical Data
Under “Plotting a Scatter Diagram,” we displayed a scatter diagram and then per-
formed a logarithmic regression calculation. Let’s use the same procedure to look at
the six regression functions.
k
k
k
k
k
Linear Regression Graph
Linear regression plots 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.
Q1
(GRPH)
[
4
(SET)
c
1
(Scat)
Q1
(GRPH)
1
(GPH1)
1
(X)
4
(DRAW)
The following are the meanings of the above parameters.
a ......
Regression coefficient (slope)
b ......
Regression constant term (
y
-intercept)
r ......
Correlation coefficient
(G-Type)
(Scat)
(GPH1)
(X)
P.105
1
2
3
4
Summary of Contents for fx-7400G PLUS
Page 7: ... fx 7400G PLUS ...
Page 14: ...xii Contents ...
Page 57: ...Differential Calculations Chapter 3 ...
Page 176: ...162 Chapter 8 Programming ...
Page 188: ...Chapter 9 Data Communications 174 ...
Page 199: ...185 1 2 3 4 5 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 200: ...186 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
Page 201: ...187 11 12 13 14 15 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 202: ...188 16 17 18 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 205: ...191 1 2 3 4 5 Program for Rotating a Figure No 5 Step Key Operation Display ...