Assume a moderate, positive correlation between fathers' weight and sons' adult weight. For a father whose weight is one standard deviation below the mean, we predict his son's weight will be
a. more than one standard deviation below the mean.
b. one standard deviation below the mean.
c. less than one standard deviation below the mean.
d. at the mean.
e. one standard deviation above the mean.
Ans: c
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Test-retest data regarding assessment consistency is an instance of:
A. Stability reliability B. Alternate-form reliability C. Internal-consistency reliability D. None of the above
For a healthy baby, mature sucking pattern emerges between 4 and 6 months of age
Indicate whether the statement is true or false
We took a sample of children who had been learning to play a musical instrument for five years. We measured the number of hours they spent practising each week and assessed their musical skill by how many of 8 increasingly difficult exams they had passed. We also asked them whether their parents forced them to practise or not (were their parents pushy?). What does the following graph shpw?
A. The more time spent practising, the more musically skilled the children were and this relationship was stronger for those who had pushy parents compared to those who did not. B. The more time spent practising, the more musically skilled the children were, and this relationship was stronger for children who did not have pushy parents than for those who did. C. Children with pushy parents always passed more grade exams than those without. D. Practice causes better exam performance.
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Indicate whether the statement is true or false.