t ratio

the formula used for the t test, in which the numerator is the difference between the means of the two groups of interest and the denominator is a measure of the dispersion of the scores used to compute the means. The t value so obtained is compared to a t distribution table to determine if the difference between the means is significant or likely to have been a chance finding.

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Psychology term of the day

October 15th 2024

level

n. in an experimental design, the quantity, magnitude, or category of the independent variable (or variables) being studied. For example, if a researcher is assessing the effect of alcohol on cognition, each specific amount of alcohol included in the study is a level (e.g., 0.0 oz, 0.5 oz, 1.0 oz, 1.5 oz).