|
|
Homogeneity X2
- A
X2
is calculated based on the sum of all experiments, summed
over each class. A X2
is calculated for each experiment separately. The homogeneity
X2
is calculated from the sum of the X2
calculated separately for each experiment minus the X2
calculated from the sum of each class across all experiments.
Example
| Plants |
|
Round |
Wrinkled |
df |
X2 |
| 1 |
Observed |
45 |
12 |
|
|
| |
Expected |
42.75 |
14.25 |
|
|
| |
(O-E)2/E |
0.12 |
0.36 |
1 |
0.48 |
| |
| 2 |
Observed |
27 |
8 |
|
|
| |
Expected |
26.25 |
8.75 |
|
|
| |
(O-E)2/E |
0.02 |
0.06 |
1 |
0.08 |
| |
| 3 |
Observed |
24 |
7 |
|
|
| |
Expected |
23.25 |
7.75 |
|
|
| |
(O-E)2/E |
0.02 |
0.07 |
1 |
0.09 |
| |
| 4 |
Observed |
19 |
10 |
|
|
| |
Expected |
21.75 |
7.25 |
|
|
| |
(O-E)2/E |
0.35 |
1.04 |
1 |
1.39 |
| |
| 5 |
Observed |
32 |
11 |
|
|
| |
Expected |
32.25 |
10.75 |
|
|
| |
(O-E)2/E |
0.002 |
0.006 |
1 |
0.01 |
| |
| Totals |
|
|
|
5 |
2.05 |
Copyright
2000©, Ted Helms |
|
