When estimating the variance of a population from the sample, the sample variance cannot be used directly because
A) it is based on using absolute deviations.
B) it is based on using squared deviations.
C) it tends to be slightly too large—it overestimates the population variance.
D) it tends to be slightly too small—it underestimates the population variance.
D
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When people are said to be insane, this means that ________
a. psychologists have compared their behaviors to characteristics of individuals with disorders and found a strong correlation. b. a psychiatrist has determined that they are suffering from one of the psychological disorders, as described in the DSM. c. a person may have a mental illness and yet be considered sane by the court. d. a diagnosis of schizophrenia has been made either by a psychologist or by a psychiatrist specializing in the treatment of the insane.
The idea that personality traits interact with situational factors to produce behaviour is known as:
a) Diathesis-stress b) Biopsychosocial theory c) Interactionism d) Determinism