105
Statistical Graphs and Calculations
Chapter 7
The following describes the meaning of each of the parameters.
_
x
..................... Mean of data
#
x
................... Sum of data
#
x
2
.................. Sum of squares
x
"
n
.................. Population standard deviation
x
"
n
-1
................ Sample standard deviation
n
..................... Number of data items
minX ............... Minimum
Q1 .................. First quartile
Med ................ Median
Q3 .................. Third quartile
maxX .............. Maximum
Mod ................ Mode
• Press
4
(DRAW) to return to the original single-variable statistical graph.
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)
1
2
3
4
P.98
(G-Type)
(Scat)
(GPH1)
(X)
Содержание fx-7400G
Страница 46: ...Differential Calculations Chapter 3 ...
Страница 164: ...161 1 2 3 4 5 Program for Circle and Tangents No 4 Step Key Operation Display ...
Страница 165: ...162 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
Страница 166: ...163 11 12 13 14 15 Program for Circle and Tangents No 4 Step Key Operation Display ...
Страница 167: ...164 16 17 18 Program for Circle and Tangents No 4 Step Key Operation Display ...
Страница 170: ...167 1 2 3 4 5 Program for Rotating a Figure No 5 Step Key Operation Display ...