Using ANOVA, an alternative or research hypothesis could look like this:
a. H0: µ1 = µ2 = µ3
b. H0: µ1 > µ2 > µ3
c. H0: µ1 = µ2 > µ3
d. H_1:X ?_1?X ?_2?X ?_3
Ans: d
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Performance on the test of students in schools 4 and 5 was:
a. consistently low across all students. b. quite variable with some students scoring high and others low. c. bunched around the school mean. d. not consistent with any of the above.
If there were a perfect positive correlation between two interval/ratio variables, Pearson's r test would give a correlation coefficient of
A. –.33. B. +1. C. +.88. D. –1.
Students with poor figure-ground discrimination skills
a. can easily understand oral directions. b. can distinguish between individual letters and words on a line. c. are distracted by movements in the classroom. d. will notice such details as the colors of the walls in the classroom.
Teachers may be tested for initial certification, but not for recertification
Indicate whether this statement is true or false.