Interested in the effects of different kinds of instruction on videogame perform
ID: 3152406 • Letter: I
Question
Interested in the effects of different kinds of instruction on videogame performance, Martin asks 30 college freshmen to each play an hour of Ratchet and Klank. Participants are randomly assigned to one of three instruction groups: (1) complete the tasks as quickly as possible, (2) conserve as much health as possible (i.e., play more carefully), or (3) find gold bolts (worth lots of money in equipment and ammunition). If Martin averages the scores for each instruction group and then compares them, any differences in the means of the instruction groups reflect:
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Question 282 pts
________ sums of squares must be calculated in a within-groups ANOVA.
within-groups variance.Explanation / Answer
(a) If Martin averages the scores for each instruction group and then compares them, any differences in the means of the instruction groups reflect:
between-groups variance.
(b)Two sums of squares must be calculated in a within-groups ANOVA.
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