Mr. Jones, a sixth grade science teacher, has tried to predict
his students' end-of-the-year grades by looking at their end-of-the-year grades from the previous year. Unfortunately, there does not seem to be any systematic relationship between these two variables. The correlation between these two variables is probably
A) near zero.
B) positive.
C) negative.
D) near 1.0.
Answer: A
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a. increasing N b. making alpha more stringent c. increasing the effect of independent variable d. increasing N and the effect of independent variable
Which of the following statements about the causes of obesity is true?
A) Fraternal twins are more likely to share the disorder than identical twins. B) Obese children are less responsive than normal-weight individuals to internal hunger cues. C) Inactivity is a consequence, not a cause, of obesity. D) Parents of overweight children rarely use high-fat, sugary foods as behavior reinforcers.
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Indicate whether the statement is true or false
You are reading the newspaper and you see a photograph of Supreme Court Justice Ruth Bader Ginsberg. Research by Archer and colleagues (1983) suggests that the picture is likely to be
a. of her head only b. of her head and body c. of her and at least one male d. unflattering