Statistics 商务统计英文版.pptVIP

Chapter 1 Data and Statistics Why study statistics? Applications in business and economics Basis for many careers Why learn statistics? You use statistics everyday Data and data-interpretation show up in discourse from virtually every facet of contemporary life Caution First reflex must be to question the statistics that you encounter Do not blindly accept numbers or findings Instead, begin to think about the numbers, their sources, and the procedures used to generate them Applications in Business and Economics Accounting: auditing Finance: comparing information for financial analysis Marketing: market research, market strategies, brand analysis Production: quality control Economics: forecasting Applications in Business and Economics Accounting Market research example Survey the public about a product brand Find out from consumers If they like the product What they like/dislike What they would change Market research example Survey 1,000 people who bought this TV Ask questions Why did you purchase this TV? (price, quality, features, etc..) Rank the following features about this TV? (picture quality, features, sound, etc..) Would you buy this TV again? Etc….. Using the data to develop market strategies to improve sales Market Research Example What is statistics? Statistics refers to numerical facts Statistics is the art and science of collecting, analyzing, presenting, and interpreting data Means for the decision makers to better understand the problem and enable them to make informed and better decisions 1. Collecting Obtaining the data What is relevant data, will depend on what you want to answer Where do you get data? Remember: “garbage in, garbage out” Data sources Existing sources Statistical studies Caution: that there is the possibility of data errors. An error in data acquisition occurs whenever the data value obtained is not equal to the true or actual value that would be obtained with correct procedure Existing