Flashcards in Chap 9 T Tests Deck (14):
When variables are measured using categories or names.
Continuous ( intervally scaled)
When variables are measured using numbers along a continuum with equal distances or values, b/w each number along the continuum.
A variable for which the values may depend on the independent on , or differ by, the independent variable. When the dependent variable is statistical related to the independent variable, the value of the dependent variable " depends" on, or is predicted by the value of the independent variable.
Dependent, or paired, samples test test
A test of statistical similarity b/w the means of two paired, or dependent samples.
Independent Sample t tests
A test of statistical similarity b/w the means of 2 independent samples on a single variable.
A variable that may predict or produce variation in the dependent variable. The independent variable may be nominal or continuous and is sometimes manipulated by the the researcher. ( e.g. when the researcher assigns participants to an experimental of control group, thereby creating a two - category independent variable)
Matched, paired, dependent samples
When each score from one sample is matched from one score from a second sample. Or in the case of single sampled measured at 2 times, when each score at Time 1 is matched with the score for the same individual at Time 2.
Matched, paired, dependent samples t tests
Test comparing the means of paired, matched, or dependent samples on a single variable.
Shortened for of the expression " statistically significant"
Standard error of the difference b/w the means
A statistic indicating the standard deviation of the sampling distribution of the difference b/w the means.
The t value = comparing 2 means to see if they are significantly different from each other.
Degrees of freedom
The standard deviation of the difference b/w 2 dependent, or paired, sample means.