Dr. Carefree placed unobtrusive video recording devices in the living rooms of 20 children. Later, coders (Matt, Mark, and Peter) viewed tapes of the living areas and coded how many minutes each child spent playing video games. Dr. Carefree wants to use the two most reliable coders. Whom should she pick and why?

mark and matt

Explanation:

Mark and Matt because the correlation between their ratings is high, A high correlation means there is a relationship between two variables. this is seen in the graph shown,as varables increase as the other increases(positive correlation) This therefore means that mark and matt better estimate through their code how many minutes each child played video games

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