Casio fx-7400G PLUS Booklet page 36

EC-1 Density of a Liquid
1-2. Concentration-Mass Relationship (Scatter Diagram)
After preparing the graph with
(GPH1) to display the scatter graph, which shows changes in
concentration and mass.
1-3. Density Calculation
Q
Press , and then obtain the density in List 3.
Move the cursor to the List 3 name, and then input
Expression 1 as described below.
K
Press to enable input into the list name, and then input
(List 2 – 11.0205) ÷ (21.0233 – 11.0205) 0.9940
1
(LIST)
1-4. Density-Concentration Relationship (Scatter Diagram)
Q
Press and perform the following key operation to
specify concentration (List 1) for the horizontal axis and
density (List 3) for the vertical axis.
1
Press (GRPH)
setup screen, specify List 3 for YList. (
3 w
(List3) )
1
Pressing (GPH1) displays the scatter diagram.
1-5. Linear Regression
1
(X) displays the linear regression
calculation result.
a, b are linear coefficients. r is the correlation coefficient.
1
(GRPH), press
1
(List)
[4
(SET). On the statistical graph
ccc
1
w
.
4
(DRAW) draws the regression graph.
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