SOLVED

21) The statistical measure of the relationships between two factors, or variables, is called the ________. A) variable matrix B) independent variable C) correlation D) reciprocal function 22) In a correlational study, when one variable increases as a second variable increases, there is a ________ correlation between them. A) random B) positive C) complementary D) negative 23) In a correlational study, when one variable increases as a second variable decreases, there is a ________ correlation between them. A) random B) positive C) complementary D) negative 24) Denica decides to study overweight people. She designs a correlational study comparing weight level and heart disease. She finds that as weight level increases, so does heart disease. Denica’s study has found a ________ correlation. A) random B) positive C) complementary D) negative 25) Monique decides to study overweight people. She designs a correlational study comparing weight level and level of physical activity. She finds that as the level of physical activity decreases, weight level increases. Monique’s study has found a ________ correlation. A) random B) positive C) complementary D) negative 26) Natasha decides to study overweight people. She designs a study that will statistically compare weight level and level of physical activity to see if there is a significant statistical relationship between them. Natasha’s study is typical of the ________ method of research. A) survey B) psychometric C) correlational D) experimental 27) Researchers have found that among schoolchildren, as the amount of time they spend reading increases, their grades increase. This is an example of a ________. A) positive correlation B) negative correlation C) additive correlation D) statistical anomaly 28) Researchers have found that among schoolchildren, as the amount of time they spend watching television increases, their grades decrease and their physical health decreases. This is an example of a ________. A) positive correlation B) negative correlation C) additive correlation D) statistical anomaly 29) Correlational studies can prove ________. A) neither if a relationship exists nor if it is causal B) if a relationship exists but not if it is causal C) if a relationship exists, and if it is causal in some situations D) if a relationship exists, and if it is causal in every situation 30) Which of the following is NOT true of correlational studies? A) They examine statistical relationships between variables. B) They can reveal significant relationships between variables. C) They are useful in achieving the scientific goal of prediction. D) They can prove cause and effect relationships between variables.