Research results indicate that 5-year-old children who watched a lot of educational programming such as Sesame Street and Mr. Rogers had higher high-school grades than their peers (Anderson, Huston, Wright, & Collins, 1998). The same study reported that 5-year-old children who watched a lot of non-educational TV programs had relatively low high-school grades compared to their peers. A researcher attempting to replicate this result using an independent-measures study with four separate groups of high school students obtained the following data. The dependent variable is a rating of high school academic performance, with higher scores indicating higher levels of performance.
a. Use a two-factor ANOVA with to evaluate the main effects and interaction.
b. Calculate the effect size
c. Briefly describe the outcome of the study.
Little Watching | Substantial |
Watching
Education TV
Non-educational TV
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