Researchers have constructed a new measure of disclosure quality-called disaggregation quality (DQ)-based on the level of disaggregation

Question:

Researchers have constructed a new measure of disclosure quality-called disaggregation quality (DQ)-based on the level of disaggregation of financial data items in a firm's annual reports (Journal of Accounting Research, December 2015). Quantitative DQ values were computed for each of 125,873 firms that had annual data from 1973 to 2011 reported on Compustat. One objective is to describe the of the DQ values for firms reported on Compustat.
a. What is the experimental unit for this study?
b. What is the variable measured in this study?
c. Are the data collected from a designed experiment or an observational study? Explain.
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