When conducting an experiment with more than two levels of the independent variable, a _____ is recommended over a _____ because of the reduced risk of a _____.
a. one-way ANOVA; t-test; Type II error
b. one-way ANOVA; t-test Type I error
c. t-test; one-way ANOVA; Type II error
d. t-test; one-way ANOVA; Type I error
Question 2
The larger the within-groups (error) variance:
a. the more difficult it becomes to show the effects of experimental variance.
b. the easier it becomes to show the effects of experimental variance.
c. the more difficult it becomes to perform the F test.
d. the easier it becomes to show a causal effect of the independent variable on the dependent variable.
Field experiment on effects of predation on male guppy colouration
Negative feedback control of a regulated variable.
Checking the freezing and boiling protection levels of the coolant using a hydrometer.
Rosenthal and Fode’s Rat Experiment
The Experiment at Robbers Cave
Levels of Organization