TST: Fixturize series/test_analytics.py
- [ ] This is in reference to issue #22550


Hello @Anjali2019! Thanks for updating the PR.

 - There are no PEP8 issues in the file [`pandas/tests/series/test_analytics.py`](https://github.com/Anjali2019/pandas/blob/3678a62e75bc6b83265195450f4f1283c732c605/pandas/tests/series/test_analytics.py) !



##### Comment last updated on September 18, 2018 at 23:23 Hours UTC @Anjali2019 : We recently dropped the AppVeyor build.  Can you rebase? # [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=h1) Report
> Merging [#22755](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/9019582c45d17035098941a666a8b6072c13a357?src=pr&el=desc) will **decrease** coverage by `<.01%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/22755/graphs/tree.svg?width=650&token=eZ4WkYLtcO&height=150&src=pr)](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #22755      +/-   ##
==========================================
- Coverage   92.21%   92.21%   -0.01%     
==========================================
  Files         161      161              
  Lines       51187    51187              
==========================================
- Hits        47202    47200       -2     
- Misses       3985     3987       +2
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `90.64% <ø> (-0.01%)` | :arrow_down: |
| #single | `42.21% <ø> (-0.01%)` | :arrow_down: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/util/testing.py](https://codecov.io/gh/pandas-dev/pandas/pull/22755/diff?src=pr&el=tree#diff-cGFuZGFzL3V0aWwvdGVzdGluZy5weQ==) | `86.64% <0%> (-0.2%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=footer). Last update [9019582...8a69d29](https://codecov.io/gh/pandas-dev/pandas/pull/22755?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
 rebase and ping on green closing as stale. if you'd like to continue pls ping. I'd like to continue this. @jreback : Any comments on this? thanks @Anjali2019 and @gfyoung 