\thechapter Introduction
Table 14: Comparing the demographics of the population in U.S., and the demographics of U.S.-based Twitter users, whose tweets were included in the 1% random sample during January – May 2017, and whose demographic information could be inferred.
['[ITALIC]  [BOLD] Baseline', '[BOLD] Gender (%) Male', '[BOLD] Gender (%) Female', '[BOLD] Race (%) White', '[BOLD] Race (%) Black', '[BOLD] Race (%) Asian', '[BOLD] Age Group (%) Adolescent', '[BOLD] Age Group (%) Young', '[BOLD] Age Group (%) Mid-aged', '[BOLD] Age Group (%) Old']
We see that some demographic groups appear more in Twitter compared to their share of U.S. population. For instance, the presence of asians in Twitter is about 3.06 times larger than in the overall U.S. population. Similarly, the adolescent and young people are much more in Twitter. However, mid-aged and old population have comparatively significantly less presence in Twitter.