Part A 1. What is a data structure? Data structure is a mechanism for storing data and organizing it in some way. The data structures you use in Alice are list and arrays. 2. Which automatically grows in size as you add items to it‚ lists or arrays? The list automatically expands as items are added to it. 3. When you drag a list tile and drop it on top of a placeholder in an instruction‚ a menu will appear. What will be on the menu? A menu appears showing a list of the methods that
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Data Models Consider a simple student registration. Specifically we want to support the tasks of students registering for or withdrawing from a class. To do this‚ the system will need to record data about what entities? What specific data about the entities will need to be stored? What is the cardinality between students and courses? Diagram the data model. While‚ considering a student class registration system for registering or withdrawing a system must have the capability to record data in
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nodes which creates a dedicated channel with full bandwidth available for communication. b. Packet Switching – Groupings of transmitted data are converted into smaller packets that are sent over a network. The transmission resources are allocated as needed and a connection exists only as long as the transmission is sent. 2. Packetization is the bundling of data being sent into smaller packets in such a way that they can be sent‚ delivered‚ and Looking at the statistics of the two stocks
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Introduction The use of management objectives was first widely advocated in the 1950s by the noted management theorist Peter Drucker. MBO (management by objectives) methods of performance appraisal are results-oriented seeks to measure employee performance be examining the extent to which predetermined work objectives have been met. Usually the objectives are established jointly by the supervisor and subordinate. An example of an objective for a sales manager might be: Increase the gross monthly
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Distinguish between primary data and secondary data? Primary data is the data that is collected first hand from the original source for the purpose of making statistical inference while secondary data is the data that is collected by the method of abstraction and is used to make statistical inference by using primary data already collected by an investigator. Primary data is collected by Identifying population of interest choosing sample analyse sample information draw inference from
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Simply use statistics as a tool. You will be given a data. (Next year you will not be given data‚ you will gather data yoruself). 1. Data: one of the variables is dependent and other dependent. Can be multiple. Then do regression analysis. ANOVA for overall significance and Regression equation. And write based on ANOVA there is a significance or not. 2. Some comments on correlation: volume vs. horse power etc. 3. Hypothesis test of one population. I assume that the mean is etc etc. Small paragraph
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Types of Data Integrity This section describes the rules that can be applied to table columns to enforce different types of data integrity. Null Rule A null rule is a rule defined on a single column that allows or disallows inserts or updates of rows containing a null (the absence of a value) in that column. Unique Column Values A unique value rule defined on a column (or set of columns) allows the insert or update of a row only if it contains a unique value in that column (or set of columns)
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The data protection principles There are eight data protection principles that are central to the Act. The Company and all its employees must comply with these principles at all times in its information-handling practices. In brief‚ the principles say that personal data must be: 1. Processed fairly and lawfully and must not be processed unless certain conditions are met in relation to personal data and additional conditions are met in relation to sensitive personal data. The conditions are
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Data Acquisition and Interfacing Lecture 09 Introduction A data acquisition system consists of many components that are integrated to: • Sense physical variables (use of transducers) • Condition the electrical signal to make it readable by an A/D board • Convert the signal into a digital format acceptable by a computer • Process‚ analyze‚ store‚ and display the acquired data with the help of software Data Acquisition System Block Diagram Flow of information in DAQ 1. 2.
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Census Data 1. The 2010 Census reported 308.7 million people in the United States‚ a 9.7 percent increase from the Census 2000 population of 281.4 million. 2. About 16-17% 3. 42‚148 4. 15.9 % The one thing I find interesting is that the poverty level has risen in percentage. We should help each other out more. Table 59. Households‚ Families‚ Subfamilies‚ and Married Couples: 1980 to 2010 [In thousands‚ except as indicated (80‚776 represents 80‚776‚000). As of March. Excludes
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