EXST 2201 Chapter : Lesson 1 3 Chapter 1 1
Document Summary
This lesson is 1. 3 however the corresponding chapter in the book is 1. 1. Constant- a characteristic of the individuals in the population whose repeated measurement gives only one possible value. Variable- a characteristic of the individuals in the population whose repeated measurement gives many possible values. Random variable- a characteristic of the individuals in the population whose repeated measurement gives randomly varying values. Its value is not known in advance but is determined by chance. Statistics is concerned with data from random variables. Qualitative data- data that can be classified by some mutually exclusive and exhaustive quality of the individuals of the population: example: colors, religion, gender. Quantitative data- data that is numerical and allows the use of arithmetic operations. Discrete data- quantitative data that has an easily countable number of possible values: example: integers from 1 to 10. Continuous data- quantitative data that has an infinite number of possible values: example: time, weight, length.
