The construction of affordable housing is a popular project, and a city has accelerated the construction of affordable housing since 2009. This paper makes statistics on the newly-built affordable hou

The construction of affordable housing is a popular project, and a city has accelerated the construction of affordable housing since 2009. This paper makes statistics on the newly-built affordable housing in this city from 2009 to 20 13. Solution: (1) Xiaoying's statement is incorrect. The reason for this is the following：

Although the annual growth rate of newly built affordable housing units in 20 12 is 20%, which is lower than the growth rate of 25% in 201year, the number of newly built affordable housing units in 20 1 1 year has increased by 20%, so Xiaoying's statement is incorrect.

(2) Number of new affordable housing units in 2012 years:15× (1+20%) =18 (ten thousand units).

Complete the statistical chart shown on the right:

(3)10+12+15+18+23.45 =15.68 (ten thousand sets).

A: In the past five years, the average number of newly built affordable housing units per year was1568,000 units.