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June 30，The United States Shizhe Publishing Group is about to launch a new book "Secondary Data in the Study of the Mixed Method Study" written by Daphne C. Watkins, a professor at the School of Social Work of the University of Michigan University of the United States。

Database library、Journal bet365 Play online games and other sources can obtain sub -data that can be obtained.，provided researchers with rich research materials。This book shows step -by -step procedures that include sub -data into various qualitative and quantitative mixing methods and determine the key features of existing data sets，To help researchers better use the secondary data，And provide them with reference for the use innovation of sub -data。

The author explores in depth in the book how Bet365 lotto review to use secondary data，also introduced the meaning and advantage of the secondary data，​​Including the type of sub -data and the theory behind it、How to choose secondary data and perform data source evaluation、Examples of the use of secondary data for the hybrid method research project。The author also guided the research design and operation，and designing a convergence design、Exploratory Sequence Design、The main Bet365 lotto review types of hybrid methods such as interpretation sequence design are proposed in the main types of hybrid methods.。（Chen Yutong/Compilation）