Chapter 3 Data Description 3-1 Measures of Central Tendency ( page 3-3) Measures found using data values from the entire population are called: parameter Measures found using data values from samples are called: statistic A parameter is a characteristic or measure obtained using data values from a specific population. A statistic is a characteristic or measure obtained using data values from a specific sample. The Measures of Central Tendency are: • The Mean • The
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IT433 Data Warehousing and Data Mining — Data Preprocessing — 1 Data Preprocessing • Why preprocess the data? • Descriptive data summarization • Data cleaning • Data integration and transformation • Data reduction • Discretization and concept hierarchy generation • Summary 2 Why Data Preprocessing? • Data in the real world is dirty – incomplete: lacking attribute values‚ lacking certain attributes of interest‚ or containing only aggregate data • e.g.‚ occupation=“ ”
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EC137 Economics Coursework Based on Principles of Microeconomics (Lecturer: Ger Turley) Assignment 2 Instructions: To be submitted by 4pm on Friday‚ 18th of October to the Economics Department‚ 1st floor of St. Anthony’s building (old part of the CAIRNES School of Business and Economics building) on the Upper Newcastle Road (located on the right-hand side‚ beyond the Topaz garage and crossroads). Please ensure that your name‚ student ID‚ tutorial details (day‚ time‚ venue)‚ degree programme
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Paper Creating a Data Warehouse Introduction Data warehouses are the latest buzz in the business world. Not only are they used to store data for reporting and forecasting‚ but they are part of a decision support system. There are many reasons for creating and using a data warehouse. The data warehouse will support the decisions a business needs to make‚ usually on a daily basis. The data warehouse collects data‚ consolidates the data for reporting purposes. Data warehouses are accompanied
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Which of the following reading components do you find the easiest and the most difficult? Vocabulary Sentence/Syntax Getting the main idea Comprehension Others:_______________ Easiest: _____________ Difficult: _______________ EASIEST COMPONENTS: Vocabulary - 3 Sentence/Syntax - 11 Getting the main idea - 16 Comprehension - 1 DIFFICULT COMPONENTS: Vocabulary - 5 Sentence/Syntax - 9 Getting the main idea - 5 Comprehension – 11 2. Why do you consider _____________ as the easiest and
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Data Collection Methods. Introduction Data collection is the process of gathering and measuring information on variables of interest‚ in an established systematic fashion that enables one to answer stated research questions‚ test hypotheses‚ and evaluate outcomes. Data Collection Techniques include the following: Personal Interviews Conducting personal interviews is probably the best method of data collection to gain first hand information. It is however‚ unsuitable in cases where there are
Free Sampling Simple random sample Stratified sampling
COURSE NO | SUBJECT | FACULTY | CC09 | FINANCIAL MANAGEMEMENT | Ms. AMBILI JOSE | CC10 | MARKETING MANAGEMENT | Mr. SREENATH .R | CC11 | HUMAN RESOURCE MANAGEMENT | Dr. ANU GEORGE | CC12 | OPERATIONS MANAGEMENT | Mr. NIBU RAJ ABRAHAM | CC13 | ENVIRONMENT MANAGEMENT | Mr. GIJO GEORGE | CC14 | OPERATIONS RESEARCH | Ms. AMBILI JOSE | CC15 | RESEARCH METHODOLOGY | Mr. JEFFIN JOHN | CC16 | MANAGEMENT INFORMATION SYSTEMS | Mr. MIDHUN JOSE | CC17 | VIVA- VOCE | | CC09 -FINANCIAL
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Data Processing During the collection of data‚ our group noted the effect that temperature change had on aquatic macro invertebrates. Our data was collected from three different ponds amongst the Lake Harriet/Lake Calhoun vicinity. We took samples from the bird sanctuary pond‚ Lake Calhoun holding pond and the Lake Harriet duck area. Prior to our procedure‚ we measured the temperatures of each pond area. We used the low-temperature climate (bird sanctuary pond) to compare to the higher-temperature
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Therefore‚ use total number of reading subtracts the number of reading during Jan 22 – Feb 4‚ and then we can get the number of reading after that period. (Eg. The total number of reading is2928 and reply is 63; 2928-1099=1829; 63-33= 30). Why drop? The application season for the upcoming fall 2013 trimester is just ended (the largest incoming MS students)‚ but there are several questions asked by incoming students who got an offer from Thunderbird. Weibo Jan 22 – Feb 22 (Monthly Data) Weibo:
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HATCO Data Set Description The HATCO data set gives data from a survey of customers of the HATCO company. The data set consists of 100 observations on 14 separate variables. Three types of information were collected. The first type of information is the perception of HATCO on seven attributes identified in past studies as the most influential in the choice of suppliers. The respondents‚ purchasing managers of firms buying from HATCO‚ rated HATCO on each attribute. Each of these 7 variables
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