Bar charts are used instead of histograms when the data are
a. Continuous
b. Non-continuous
c. In the form of values that may fall at any point along an unseparated scale of points
d. None of these since bar charts and histograms are synonymous.
b
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The immune system is weakened in AIDS patients because the human immunodeficiency virus directly attacks the lymphocytes called a. killer T cells
b. T4 (helper) cells. c. suppressor T cells. d. B cells.
The resinous material scraped from the Cannabis leaves is called
a. psilocybin. b. marijuana. c. hashish. d. mescaline.
Although she doesn't know this, the reason Petra enjoys smoking cigarettes is because
low doses of nicotine produce pleasurable effects by stimulating __________ receptors in the brain. a. glutamate b. dopamine c. serotonin d. acetylcholine e. GABA
Which of the following is true of the classic Robber's Cave study by Sherif and Sherif (1967)?
A) It demonstrated that when the in-group and out-group mentality develops, prejudice and hostility are likely to follow. B) It showed just how obedient males and females can be when faced with an authority figure. C) By providing unlimited resources, groups did not need to work together; the hostility ended and friendships eventually formed. D) It demonstrated that when the in-group and out-group mentality develops, prejudice and hostility are likely to follow, and by limiting resources, thereby forcing the groups to work together, the hostility ended and friendships eventually formed.