A researcher conducted a survey of 1795 families with elemen

A researcher conducted a survey of 1795 families with elementary school aged children. For each family, the average IQ of the children and the number of hours per day that the children spent playing video games were measured. The survey results showed that the average IQ of these children in the families was negatively predicted by the number of hours per day that the children spent playing video games (that is, overall, the more video game hours, the lower the average IQ). Number of hours spent playing video games Whether or not the child played video games IQ Average IQ of children in the family It may well be the case that it is not the playing of video games that leads to a lower 10. Maybe this is a common response to poor parental involvement (more parental involvement may be associated with higher IQs and also lead to less video game playing at the same time). One cannot tell since this is an observational study. In this case, the variable \"level of parental involvement with children\' would be a: response variable explanatory variable confounding variable

Solution

A)

Here response or dependent variable is Average IQ of children in the family

B)

Level of parental involvement with children would be explonatory variable. Since this variable is influence the IQ of student