a possibility due to a favorable combination of circumstances
a correlation coefficient calculated between scores on two halves of a test; taken as an indication of the reliability of the test
an unknown and unpredictable phenomenon that causes an event to result one way rather than another
be the case by chance
a measure of how likely it is that some event will occur; a number expressing the ratio of favorable cases to the whole number of cases possible
take a risk in the hope of a favorable outcome
the possibility of future success
