Casio fx-83GT PLUS - Page 21

To delete all Stat Editor contents: In the Stat Editor, perform the following
key operation: (1) (STAT) (8) (Edit) (2) (Del-A).
Obtaining Statistical Values from Input Data
To obtain statistical values, press while in the Stat Editor and then
recall the statistical variable (ox, £x°, etc.) you want. Supported statistical
variables and the keys you should press to recall them are shown below.
For single-variable statistical calculations, the variables marked with an
asterisk (*) are available.
Sum: Xx", Dx"; Ly", Ly, Day, 2 a yee
(uA) G)(STAT) ()(Sum) G) to
Number of Items: 1*, Mean: x*, y, Population Standard Deviation: ox",
oy, Sample Standard Deviation: sx*, sy
G)(STAT) (4)(Var) () to
Minimum Value: minX*, minY, Maximum Value: maxX*, maxY
(surt) (1 (STAT) ()(MinMax) () to (2)
(When the single-variable statistical calculation is selected)
(O(STAT) [(6)(MinMax) () to (4)
(When a paired-variable statistical calculation is selected)
Regression Coefficients: A, B, Correlation Coefficient: 7, Estimated
Values: <x,
(uF) GJ(STAT) (5)(Reg) @ to 6)
Regression Coefficients for Quadratic Regression: A, B, C, Estimated
Values: £1, <2, P
GO(STAT) ()(Reg) G) to
¢ See the table at the beginning of this section of the manual for the regression
formulas.
° %, %1, Xe and # are not variables. They are commands of the type that take
an argument immediately before them. See “Calculating Estimated Values”
for more information.
2 To input the single-variable data x = {1, 2, 2, 3, 3, 3, 4, 4, 5}, using
the FREQ column to specify the number of repeats for each items
({xn; freqn} = {1;1, 2;2, 3;3, 4;2, 5;1}), and calculate the mean and
population standard deviation.
(SETUP) @ (8) (STAT) G1) (ON)
(2) (STAT) GJ (1-VAR)
126384858 oO®
1263626)
OD
STANG
van
0S
a
Bd
GA
CD
(STAT)
@
(Var)
B)
(ox)
1.
154700538
Results: Mean:3 Population Standard Deviation: 1.154700538
43 To calculate the linear regression and logarithmic regression
correlation coefficients for the following paired-variable data and
determine the regression formula for the strongest correlation: (x, y)
= (20, 3150), (110, 7310), (200, 8800), (290, 9310). Specify Fix 3
(three decimal places) for results.
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