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24. A sub group of the population that will be studied in detail is called A. Sample D. Sample Frame B. Parameters E. All of the above C. Sample Statistic 25. Descriptive Statistics is concerned with the process of drawing conclusions about the population from samples A. True B. False 26. Which one of the following can be considered as work of inferential statistics? A. Performing hypothesis testing C. Making predictions B. Determining relationships among variables D. All 27. Which one of the following is not a characteristic of statistics? A. Statistics are collected for a predetermined purpose B. Statistics are aggregates of facts B. Statistics are qualitatively expressed D. Statistical data is collected in a systematic manner E. None of the above 28. Which of the following statements is true? A. The larger the population size, the closer the population mean will be to the sample mean. B. The smaller the sample size, the closer the sample mean will be to the population mean. C. The larger the sample size, the closer the sample mean will be to the population mean. D. The smaller the population size, the smaller the relationship will be between the sample mean and the population mean. E. None of the above 29. is used to change the heterogeneous population in to a relatively homogenous population & there by help reduce the sampling error A. Systematic sampling B. Simple random sampling C. Cluster sampling D. Stratified sampling E. Quota sampling 30. One is not commonly used non-random sampling techniques A. Convenience sampling B. Quota sampling C. Judgmental sampling D. Cluster sampling E. None of the above Using the following data, try to answer question number 16-20 Daily Wages No. of Workers 150-160 160-170 8 170-180 15 180-190 10 190-200 2 31. What is the mean of the above data? D. 160 A. 174 E. None of the above B. 200 C. 150