Xe: the # of events expected to display the characteristic of interest.
Xo: the # events that actually display the characteristic of interest.
X: a possible value of Xo.
Null hypothesis/ Ho: specifies expectations as population parameters.
n: the # of events (people, coin flips, items, trials, etc…) observed.
- Probability: likelihood of observing a particular event class.
- P(A): probability of observing an outcome or characteristic that you are INTERESTED IN which belongs to event class A
Q(B): probability of
observing the only other possible outcome or characteristic, belonging to event class B—the “other one.”
Note that P+Q=1.00.