Sampling 166 Statistics 96 sampling 44 Sampling (Statistics) 41 Probability 33 Social sciences 27 Sampling Theory 26 probability 22 regression 21 Methodology 19 Research 19 Research methodology 16 Statistical methods 16 Agricultural Extension 15 Interviewing techniques 15 Random sampling 13 statistics 13 Air sampling 12 Regression 12 Baseline surveys 11 Social surveys 11 Plant Pathology 10 Qualitative research 10 Research design 10 SAMPLING 10 correlation 10 Data processing 9 Random variables 9 Sampling theory 9 Soil Science and Agricultural Chemistry 9