PARAMETERS
Name of parameter | Content | Name of parameter | Content |
A | number of levels | V | variance factor |
I | input of data | U | variance error |
K | loop 1 counter | Y | Σi (Σ jxij)2 / n |
J | indicating Σx | Q | degree of freedom factor |
N | repeated frequency | R | degree of freedom error |
S | loop 2 counter | D | degree of freedom total |
X | (ΣΣ xi)2/ a/ n | T | input and indicating frequency |
Z | Σi Σj (xij)2 | L | input and indicating number of levels |
F | variance ratio factor | W | total sum of squares of each level |
E | sum of squares factor | B | total sum (all data) |
M | sum of squares error | C | stotal sum of squares (all data) |
P | sum of squares total |
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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 F- distribution table of the 5% level of significance, the relationship between the hormone amount and the increase of mouse weight is a causal relation.
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| Increase mouse weight (grams/day) |
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| 10 | 20 | 30 | 40 | 50 |
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Hormone | 10 |
| 882 | 891 | 864 | 888 | 885 |
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20 |
| 923 | 915 | 923 | 912 | 930 | |
(grams/mouse) |
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30 |
| 933 | 939 | 925 | 940 | 932 | |
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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.
2nd F 
SET UP 
C *
1*
CL
| Step | |
| Specify the programme mode. | |
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Select the title VARIANCE. | ||
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Key Operation | Display |
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2nd F 
PRGM 
A *
2 | Enter the number of levels and |
the repeated frequency. | |
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3
ENTER 
5
3
ENTER
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