chapter_11_table_5: The data used in Chapter 11, Table 5

Description

The data used in Chapter 11, Table 5

Usage

data(chapter_11_table_5)

Arguments

Format

An object of class data.frame with 12 rows and 4 columns.

Variables

months30: age-normed general cognitive score for 30-month-old

months36

age-normed general cognitive score for 36-month-old

months42

age-normed general cognitive score for 42-month-old

months48

age-normed general cognitive score for 48-month-old

Synonym

C11T5

Author

Ken Kelley kkelley@nd.edu

Details

The data show that 12 participants have been observed in each of 4 conditions. To make the example easier to discuss, let's suppose that the 12 subjects are children who have been observed at 30, 36, 42, and 48 months of age. Essentially, for the present data set, 12 children were each observed four times over an 18 month period. The dependent variable is the age-normed general cognitive score on the McCarthy Scales of Children's Abilities. Interest is to determine if the children were sampled from a population where growth in cognitive ability is more rapid or less rapid than average.

References

Maxwell, S. E., Delaney, H. D., \& Kelley, K. (2018). Designing experiments and analyzing data: A model comparison perspective (3rd ed.). New York, NY: Routledge.

Examples

Run this code

# Load the data
data(chapter_11_table_5)

# Or, alternatively load the data as
data(C11T5)

# View the structure
str(chapter_11_table_5)

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