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EL-9900 Graphing Calculator
PARAMETERS
Name of parameter
A
I
K
J
N
S
X
Z
F
E
M
P
Content
number of levels
input of data
loop 1 counter
indicating Σx
repeated frequency
loop 2 counter
(ΣΣ xi)
2
/ a/ n
Σi Σj (xij)
2
variance ratio factor
sum of squares factor
sum of squares error
sum of squares total
Name of parameter
V
U
Y
Q
R
D
T
L
W
B
C
Content
variance factor
variance error
Σi (Σ jxij)
2
/ n
degree of freedom factor
degree of freedom error
degree of freedom total
input and indicating frequency
input and indicating number of levels
total sum of squares of each level
total sum (all data)
total sum of squares (all data)
3
DisplayStep
Key Operation
1
2
Specify the programme mode.
Select the title VARIANCE.
Exercise
When a mouse is given a dosage of hormone, the relationship between dosage amount
and increase of mouse weight is as shown in the following table. Find the analysis of
variance. If the value of the variance ratio is larger than the value of the F- distribution
table at the 5% level of significance, the relationship between the hormone amount
and the increase of mouse weight is a causal relation.
The number of levels (number of columns in the table) is A = 3
The repeated frequency (number of rows in the table ) is N = 5
Set up condition: decimal point in Float Pt Mode.
Increase mouse weight (grams/day)
Hormone
(grams/mouse)
10
20
30
10
882
923
933
20
891
915
939
30
864
923
925
40
888
912
940
50
885
930
932
Enter the number of levels and
the repeated frequency.
23
SET UP
2nd F
CL1C
PRGM
A
5
3
ENTER
ENTER