One consequence of the urban growth of the late nineteenth century was the development of A) urban renewal in neighborhoods.
B upper-class neighborhoods.
C) urban planning.
D) powerful city political machines.
E) high standards for construction.

Astudent finds data on an internet site that contains financial information about selected companies. he plans to analyze the data and use the results to develop a stock investment strategy. what kind of data source is he using? what concerns might you have about drawing conclusions from this data set?