Why statistics is important How statistics is used in business The sources of data used in business The types of data used in business The key terms The basics of Microsoft Excel

Time series vs Cross sectional e Time series data has a temporal ordering unlike cross-section data Will need to alter some of our assumptions to take into account that we no longer have a random sample of individuals Instead. we have one realization of a stochastic(i.e. random) process Economics 20- Prof anderson

Why study econometrics? Rare in economics(and many other areas without labs! ) to have experimental data Need to use nonexperimental. or observational data to make inferences eImportant to be able to apply economic theory to real world data Economics 20- Prof. Anderson

• Concepts and Terminology • Analog and Digital Data Transmission • Transmission Impairments • Channel Capacity

1. 认识软件 2. 数据录入与定义 编码——录入数据——定义数据 3. 数据整理 变换——排序 4. 其他常用内容 选择统计分析用的记录和变量 数据转置DATA--TRANSPOSE 数据文件拆分与合并DATA--MERGE FILES

MATLAB® is a high-level language that includes matrix-based data structures, its own internal data types, an extensive catalog of functions, an environment in which to develop your own functions and scripts, the ability to import and export to many types of data files, object-oriented programming capabilities, and interfaces to external technologies such as COM, Java, programs written in C and Fortran, and serial port devices

Purpose of speech corpora Factors to be considered in data creation Data creation Data transcription Learning from corpora Chinese Corpus Consortium (CCC)

1 Introduction 2 SAS Language 2.1 Proc Step and Data Step 2.2 SAS Logical Library 2.2.1 Access SAS file 2.2.2 View SAS library and file 3 SAS Programming 3.1 Reading data by DATA STEP 3.2 Output format 3.3 Manipulate datasets 3.3.1 SET statement 3.3.2 SORT proc 3.4 Logical statements 3.4.1 IF-THEN statement 3.4.2 SELECT-WHEN statement 3.4.3 DO-ENDS statement 3.4.4 DO-WHILE DO-UNTIL statement 3.5 OPERATIONS 4 Basic statistical analysis 4.1 Descriptive Statistics Proc 4.1.1 MEANS proc 4.1.2 SUMMARY proc 4.1.3 UNIVARIATE proc 4.1.4 TABULATE PROC 4.1.5 GCHART proc 4.1.6 GPLOT proc 4.2 INFERENTIAL Statistics 4.2.1 T-TEST 4.2.2 Chi-square tests 4.2.3 Correlation 4.2.4 Regression

主讲内容：Data Pump基础知识、使用Data Pump导出表空间、数据库、数据表等； 一．认识Data Pump工具 二．准备工作 三．导出数据 四．导入数据

• Basic database terminology and concepts • Security requirements for databases • Implementing access controls in databases • Protecting sensitive data • Data mining and big data