Before calculating a Pearson correlation coefficient, it is advisable to plot the data because
a. one must be sure that the underlying relationship between the two variables is linear.
b. the diagram is more informative than the correlation coefficient regarding causality.
c. one must make sure that the data are from a truncated range.
d. the correlation coefficient cannot show the direction of the relationship.
A
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Pavlov believed that a physiological change caused an animal to react to the CS as if it were the UCS. Which of the following is evidence AGAINST that idea? a. Conditioning occurs faster with an unfamiliar CS than with a familiar CS. b. In some cases extinction is followed by spontaneous recovery
c. In some cases the CR does not resemble the UCR. d. Conditioning occurs faster with a strong UCR than with a weaker UCR.
What are some of the findings regarding sex differences in children's mental health problems?
What will be an ideal response?
In contrast to patients with Alzheimer's disease dementia, patients with vascular neurocognitive disorder are more likely to have symptoms such as
A. abnormalities in walking or muscle weakness during early stages. B. abnormalities in walking or muscle weakness during late stages. C. memory impairment during the early stages. D. memory impairment during the late stages.
The value used for alpha depends on the consequences of making a Type I and Type II error
Indicate whether the statement is true or false