This is a grpah with two panels. Each panel shows a scatter plot.
The first panel shows a scatter plot of vocabulary against chronological age. This is a graph with the horizontal axis labelled “Chronological age in years” and numbered 10, 20, 30, 40, 50, 60. The vertical axis is labelled “Vocabulary (standardized values)” and numbered 40, 60, 80, 100, 120, 140. There is a cloud of points represented by open diamond shapes, rising slightly from the point age = 10, vocabulary = 90, to age = 60, vocabulary = 105, with vertical depth about 20 units. There are two straight lines, a solid line from age 10, vocabulary 90 to age 60, vocabulary 110 and a broken line from age 10, vocabulary 95 to age 60, vocabulary 110. There is a key showing that the diamonds and solid line represent epilepsy subjects, the broken line represents controls. For epilepsy subjects the key gives r = minus 0.45 and for controls there is r = minus 0.22.
The second panel shows a scatter plot of verbal learning against chronological age. This is a graph with the horizontal axis labelled “Chronological age in years” and numbered 10, 20, 30, 40, 50, 60. The vertical axis is labelled “Verbal learning (standardized values)” and numbered 40, 60, 80, 100, 120, 140. There is a cloud of points represented by open diamond shapes, falling from the point age = 10, verbal learning = 100, to age = 60, verbal learning = 75, with vertical depth about 30 units. There are two straight lines, a solid line from age = 10, verbal learning = 93 to age = 60, verbal learning = 78 and a broken line from age = 10, verbal learning = 105 to age = 60, verbal learning = 90. There is a key showing that the diamonds and solid line represent epilepsy subjects, the broken line represents controls. For epilepsy subjects the key gives r = minus 0.37 and for controls there is r = minus 0.34.
Back to Exercise: Vocabulary, age, and epilepsy.
This page maintained by Martin Bland.
Last updated: 2 March, 2009.