T
A | B | C | D | E | F | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | Z
T-test (one sample) - Hypothesis test about a single mean if the sample is too small to use the Z-test.
Telephone Interview - Telephone conversation between a representative of the research organization, the interviewer, and a respondent or interviewee.
Testing Effect - Contaminating effect in an experiment occurring because the process of experimentation itself affected the observed response.
Tracking Study - Research that repeatedly measures the same variables and determines their changes over time.
Type I Error - Rejecting a null hypothesis that is actually true (concluding that a treatment does have an effect when in fact the treatment has no effect).
Type II Error - Failing to reject a null hypothesis that is actually false (concluding that a treatment has no effect when in fact there actually is an effect).