Statistics I · Unit 1 · 4 hrs
Introduction
Exam-focused notes for Introduction (Statistics I, STA169): what the TU syllabus asks and how it has actually been tested, with 4 solved past questions from this unit.
What this unit covers
- Basic concept of statistics
- Application of Statistics in the field of Computer Science & Information technology
- Scales of measurement
- Variables
- Types of Data
- Notion of a statistical population
Types of Data
Differentiate between primary data and secondary data. What are the sources of secondary data? [5]
Primary Data: Primary data are those data which are collected by the investigator himself/herself for the first time. They are original in nature and collected for a specific purpose of inquiry. Example: Data collected by CBS (Central Bureau of Statistics) ...
Full solved answer →Define primary data and secondary data and explain the difference between them. [5]
Data is the raw information which is useful for any kind of research or inquiry. --- Primary data are those data which are collected by the investigator himself/herself for the first time for a specific purpose. In other words, primary data are first-hand o...
Full solved answer →Application of Statistics in the field of Computer Science & Information technology
State with suitable examples the role played by computer technology in applied statistics and the role of statistics in information technology. [5]
Computer technology has revolutionized the field of applied statistics by making complex calculations faster, more accurate, and more reliable. The key roles are described below: Computers can perform many statistical calculations easily and quickly. Comput...
Full solved answer →Scales of measurement
What do your mean by measurement scale? Describe the different types of measurement scales used in statistics. [5]
The measurement consisting of counting the number of units or parts of units displayed by objects and phenomena is called a measurement scale. In other words, a measurement scale is a system or rule used to assign numbers or symbols to objects, events, or c...
Full solved answer →Make Unit 1 stick
Practice STA169 with flashcards & quizzes