Utilize question #25 in Gravetter & Wallnau, Chapter 13 but with the following data:

First-born children tend to develop language skills faster than their younger siblings. One possible explanation for this phenomenon is that first-borns have undivided attention from their parents. If this explanation is correct, then it is also reasonable that twins should show slower language development than single children and that triplets should be even slower. Davis (1937) found exactly this result. The following hypothetical data demonstrate the relationship. The dependent variable is a measure of language skill at age 3 for each child. Do the data indicate any significant differences? Test with \(\alpha=.05\).

1. Data Analysis (Findings): Using the above data set, conduct and present data analysis. Present the following:

1. Body of analysis using subheadings to guide the reader (in a quantitative study, this section is often organized by hypotheses). Use tables and graphs as appropriate.
2. Summary of findings

Solution: Using SPSS, the following results are obtained:

The first table shows that the assumptions of homogeneity of variances is met (p = 0.908).

The ANOVA table shows that the F-ratio is F = 19.580, and the corresponding p-value is p = 0.000, which means that the null hypothesis of equal means is rejected.

Since the ANOVA test is significant, we need to perform a Post-Hoc test

As it can be observed above, all the means significantly different. The means from higher to lower are Single Child, Twin, Triplet.

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Solution: The downloadable solution consists of 3 pages, 185 words and 4 charts.
Deliverable: Word Document