The chapter discusses different types of sampling methods used in qualitative research to select information-rich cases. Two types of sampling techniques are discussed in the past qualitative studies—the theoretical and the purposeful sampling techniques. The chapter illustrates these two types of sampling techniques relevant examples. The sample size estimation and the point of data saturation and data sufficiency are also discussed in the chapter. The chapter will help the scholars and researchers in selecting the right technique for their qualitative study.

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The paper examines the factors influencing the profitability of Indian commercial banks considering increased globalization, intensified competition, and enhanced concentration. The sample is a balanced panel dataset of 89 banks operating in India for the period 2005 to 2015. We consider the return on assets (ROA) and the return on equity (ROE) as proxy for measurement of banks' profitability. The results indicate that profitability of banks in India is affected by both internal and external factors. Strength of equity capital, operational efficiency, ratio of banking sector deposits to the gross domestic product (GDP), had significantly positive effect on profitability of banks and credit risk, cost of funds, non-performing assets (NPA) ratio and consumer price index (CPI) inflation have significantly negative influence on banks' profitability while bank size and ratio of priority loans to total loans do not have any influence on the profitability. The GDP growth and inflation have significantly negative relation with ROA and inflation has positive influence on ROE.

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