[po] auto sync

github-actions[bot] · github-actions[bot] · commit afcafa01827c · 2019-11-05T01:28:55.000Z
diff --git a/library/statistics.po b/library/statistics.po
@@ -311,32 +311,36 @@ msgid ""
 "the harmonic mean of three values *a*, *b* and *c* will be equivalent to "
 "``3/(1/a + 1/b + 1/c)``."
 msgstr ""
+"调和均值,也叫次相反均值，所有数据的倒数的算术平均数 :func:`mean` 的倒数。比如说，数据 *a* ， *b* ， *c* 的调和均值等于 "
+"``3/(1/a + 1/b + 1/c)`` 。"
 
 #: ../../library/statistics.rst:169
 msgid ""
 "The harmonic mean is a type of average, a measure of the central location of"
 " the data.  It is often appropriate when averaging rates or ratios, for "
 "example speeds."
-msgstr ""
+msgstr "调和均值是一种均值类型，是数据中心位置的度量。它通常适合于求比率和比例的平均值，比如速率。"
 
 #: ../../library/statistics.rst:173
 msgid ""
 "Suppose a car travels 10 km at 40 km/hr, then another 10 km at 60 km/hr. "
 "What is the average speed?"
 msgstr ""
+"假设一辆车在 40 km/hr 的速度下行驶了 10 km ，然后又以 60 km/hr 的速度行驶了 10 km 。车辆的平均速率是多少？"
 
 #: ../../library/statistics.rst:181
 msgid ""
 "Suppose an investor purchases an equal value of shares in each of three "
 "companies, with P/E (price/earning) ratios of 2.5, 3 and 10. What is the "
 "average P/E ratio for the investor's portfolio?"
 msgstr ""
+"假设一名投资者在三家公司各购买了等价值的股票，以 2.5， 3 ， 10 的 P/E (价格/收益) 率。投资者投资组合的平均市盈率是多少？"
 
 #: ../../library/statistics.rst:190
 msgid ""
 ":exc:`StatisticsError` is raised if *data* is empty, or any element is less "
 "than zero."
-msgstr ""
+msgstr "如果 *data* 为空或者 任何一个元素的值小于零，会引发 :exc:`StatisticsError` 。"
 
 #: ../../library/statistics.rst:198
 msgid ""
