A correlational study on the hyperactive behavior of fifth grade emotionally dis

Question

A correlational study on the hyperactive behavior of fifth grade emotionally disturbed children found that hyperactivity increased on those days when children had consumed large amounts of candy. The researchers concluded that the hyperactive behavior could be decreased by reducing or eliminating candy from the children's diet. Is the conclusion justified? Explain your answer. Betsy is interested in predicting cholesterol levels among 75-year olds and is using as predictors, level of education and general physical health. She is also interested in using other predictor variables as well. Answer the following questions: a. What statistical test should she use to predict cholesterol levels?______ b. Give two criteria she should use to select the other predictors?______ c. What any two numbers should she look at in the output to evaluate her prediction model?_______ A. In a study that uses ANCOVA, indicate the scale of measurement for each of the following variables? Dependent Variable_____ Factor______ Covariate______ B. What two main conditions need to be met before one performs ANCOVA?______

Explanation / Answer

5. From the statement it is clear that there is postive correlation between hyperactivity and consumption of candies.

Hence conclusion is correct as per decreasing consumption on candies one can decrease hyperactivity behaviour.

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