Cohorts in Marketing. Similar to demographics, cohorts use quantifiable descriptors to identify target markets. Demographics, however, are the quantifiable descriptors themselves, such as the aforementioned age and household income.
The highest peaks are over 2,000 m (6,600 ft). Beijing Municipality consists of six city districts (previously eight, see Xuanwu and Chongwen), eight suburban districts and two rural counties. It covers a total area of 16,807.8 km2 (6,489.5 sq mi).
The terrain of the Beijing area slopes from the northwest to the southeast. Mountains snake round the city's north, west and northeast, while the southeast part of the city is a plain that slopes gently toward the coast of the Bohai Sea. The Yongding, Chaobai and Juma rivers and the north section of the Grand Cannel crisscross the area under Beijing's jurisdiction. Most of the rivers originate from mountainous areas in the northwest, cut through mountains and zigzag through the plain in the southeast before emptying into Bohai Sea.