MAT 2379 Lecture Notes - Lecture 4: Blood Lead Level, Bernoulli Trial, Binomial Coefficient

• School: University of Ottawa
• Department: Mathematics
• Course: MAT 2379
• Professor: Maryam Sohrabi

Document Summary

Definition stochastic variable is a variable whose value is subject to variations due (cid:499))n probability and statistics, a random variable, aleatory variable or to chance (i. e. randomness, in a mathematical sense(cid:524). (cid:499) A function x : s r, that assigns real numbers to the outcomes in the sample space, is called a random variable. We use upper-case letter (often at the end of the alphabet) to denote random variables, e. g. x,y,z,w, As an outcome is observed and we evaluate the random variables, we obtain an observed value. The observed values are denoted with lower-case letters, e. g. x,y,z,w, Examples of discrete random variables: the sex of a newborn human infant; 2. The number of worker bees in a honeybee society; 3. The number of students enrolled in a graduate course; 4. The number of genes a in an offspring of two heterozygous individuals aa; The weight (or height) of an individual; 2. The blood pressure (or temperature) of a patient; 3.