【每日一练】CFA 一级（2015年）

Question：

An analyst collects data relating to five commonly used measures of financial leverage and interest coverage for a randomly chosen sample of 300 firms. The data come from those firms' fiscal year 2013 annual reports. These data are best characterized as: 
A. time series. 
B. longitudinal. 
C. cross sectional. 
 

Answer = C 

Data on some characteristics of companies at a single point in time are cross-sectional data. 

CFA Level I 
"Sampling and Estimation," Richard A. Defusco, Dennis W. McLeavey, Jerald E. Pinto, and David E. 
Runkle 
Section 2.3 

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