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Table 2
Expected and observed numbers of galaxy clusters with a given number of counts.
| Numbers of counts | Expected number | Observed number |
| of clusters | of clusters | |
|
|
||
| 0 | 10.5 | 10 |
| 1 | 17.4 | 19 |
| 2 | 14.4 | 15 |
| 3 | 7.9 | 4 |
| 4 | 3.3 | 5 |
| 5 | 1.1 | 2 |
| 6 | 0.3 | 0 |
Notes. The expected numbers are obtained from the Poisson distribution of counts with parameter λ = 1.65 for all 55 galaxy clusters.
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