Vejrup, Lien, Klepp, and Bere (2008) measured the relationship between intake and availability of vegetables at dinner in surveys during 2002 and 2005. The correlation matrix summarizes some of the correlations observed in the study. Explain why the last cell in each row is a perfect positive correlation.

Transcribed Image Text:

Vegetable Intake nd Availability at Dinner 1.00 intake-02N 1779 1. Adolescent 2. Adolescent 46 1.00 availability-02 N 1766 1,779 3. Adolescent .52 35 1.00 intake-05N 1476 1,476 1,584 4. Adolescent33 35 59 1.00 availability-05 N 1,484 1,483 1,581 1,594 5. Parent 25 23 27 22 1.00 1301 1,298 1,149 1,155 1,320 intake-02 N 6. Parent 22 23 21 22 60 1.00 availability-02 N 1,299 1,296 1,148 1,154 1,316 1,318 All correlations are significant at the.01 level (two-tailed).