BUG: zero result in Series.kurt for low variance arrays
#25976
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| 22m 13s | |
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| 36m 3s | |
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| 47m 0s | |
| 23m 2s | |
| 44m 7s | |
| 23m 55s | |
| 43m 42s | |
| 17m 41s | |
| 47m 5s | |
| 36m 0s | |
| 36m 1s | |
| 28m 37s | |
| 5m 13s | |
| 21m 29s | |
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| 20m 37s | |
| 28m 5s | |
| 17m 42s | |
| 14m 56s | |
| 12m 6s | |
| 14m 39s | |
| 14h 18m 22s |