STAT151 Lecture Notes - Claustrophobia, Fair Coin, Frequency Distribution

• School: University of Alberta
• Department: Statistics
• Course: STAT151
• Professor: Sunil Barran

Document Summary

Example: # fish in a lake; points scored in a football game; weight of a rhino; Definition: the probability distribution of a discrete random variable, x, lists all the possible values that the random variable can assume and their corresponding probabilities, p(x) Example: suppose of 60% of all stats151 students suffer from math anxiety. Let x denote the number of students in the sample who suffer from math anxiety. The national aeronautics and space administration (nasa) compiles data on space-shuttle launches and publishes them on its web site. The following table displays a frequency distribution for the number of crew members on each shuttle mission from april 1981 to july 2000. Let x denote the crew size of a randomly selected shuttle mission between april. Mean of a discrete random variable x is the value that is expected to occur per repetition, i. e. on average if an experiment is repeated a large number of times. m s xp xpx.