Understanding Data Structure in Statistics
What is the Structure of Information?
Data consists of the unit of analysis, the variable, and the category. Data are the raw materials with which statistics work. Statistical processes transform data into useful information. Data extracted from reality should be the most appropriate data for the objectives of the work to be done.
Example: “Luis is 1.70 Meters Tall”
Identify the data, the unit of analysis, the variable, and the category in the following example: “Luis is 1.70 meters tall.”
In the statement
Read MoreRushCard Account Management and Security Procedures
Login Credentials
- Avaya: 130441 Pass: 1445
- Windows: luis.colato Pass: G.T.A.07
- Unirush: lcastillo1 Pass: Rushcard6
- TSYS: lcastillo Pass: Colato0777
- VT/Idology: lcastillo1 Pass: Colato0777
Contact Information
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- Tier 2: Ext. 404003
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Real-Time Alerts (RTA) Features
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- Rush BillPay
- Budget
Primary and Secondary Data Sources: Collection Methods
Primary and Secondary Data Sources
Primary Source
Definition: Data collected directly from the original source.
Description: First-hand data gathered specifically for the current investigation.
Example: Surveys, interviews, and experiments conducted by the researcher for their own research purpose.
Secondary Source
Definition: Data that already exists and was collected for a different purpose.
Description: Second-hand data gathered by others and used for a new analysis.
Example: Reports, academic papers,
Read MoreMath Problem Solutions: Equations, Geometry, and Proofs
Math Problem Solutions
Solving Equations
21: Adding the two equations and dividing by 10, we get: x + y = 10. Subtracting the two equations and dividing by -2, we get: x – y = 1. Solving these two new equations, we get, x = 11/2.
Geometry and Circles
30: Let ABCD be the rhombus circumscribing the circle with center O, such that AB, BC, CD, and DA touch the circle at points P, Q, R, and S respectively. We know that the tangents drawn to a circle from an exterior point are equal in length.
- AP = AS (1)
- BP
SQL Database Schema and Queries for Restaurant Management
Group 23 Project SQL DDL and DML
SQL CREATE TABLE Statements
Employee Table
CREATE TABLE Employee (
employeeID INT IDENTITY(1000,1) NOT NULL,
employeeName VARCHAR(40) NOT NULL,
employeeDOB DATE NOT NULL,
employeeSalary NUMERIC(7,2) NOT NULL,
employeeTitle VARCHAR (20),
CONSTRAINT pk_employeeID PRIMARY KEY (employeeID)
);
Utility Company Table
CREATE TABLE UtilityComp (
ucompID INT IDENTITY(2000,1) NOT NULL,
ucompName VARCHAR(50) NOT NULL,
ucWebsite VARCHAR(40) NOT Read More
Understanding Random Perturbation in Economic Models
Understanding the Random Perturbation Term
The term u, often denoted as a random perturbation, captures the randomness present in the relationships between economic variables. Instead of using deterministic equations, introducing a stochastic term, ui, is more appropriate to represent economic reality. This term accounts for numerous small factors that globally affect the dependent variable, Y, but are not explicitly included in the equations. In essence, it represents the sum of all explanatory
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