When choosing bin width and location, you should strive to show:
a. Real patterns in the data as well as random idiosyncratic fluctuations that may be present.
b. Real patterns in the data without showing random idiosyncratic fluctuations that may be present.
c. Random idiosyncratic fluctuation in the data without showing any real patterns that may be present.
d. Anything that will make it more likely that your work will get published.
b. Real patterns in the data without showing random idiosyncratic fluctuations that may be present.
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In order to estimate the ratio of white to black students in his college, a professor determines the proportion of whites and blacks in his class. The resulting proportion is called a _________
a. population c. parameter b. sample d. statistic
It takes about ______ for a baby's visual system to fully develop
a. 1 to 2 months c. 1 to 2 years b. 3 to 4 months d. 3 to 4 years
According to dissonance theorists, the practice of threatening mild punishment works because it arouses ________ cognitive dissonance and therefore causes ________
a. little; a change in attitude toward the forbidden act b. no; little if any frustration c. much; a change in attitude toward the forbidden act d. much; avoidance of the punishment
Carmen, Jill, and Alexia are trying to quit smoking. Carmen delays when she has her first cigarette each morning and tries to delay it a little longer each day
Jill is gradually reducing the total number of cigarettes she smokes each day. Alexia quits smoking for one week, then quits again, a week at a time, continuing until she quits completely. Which of the following statements best describes these procedures? a. Carmen and Jill are each using a scheduled gradual reduction method that will most likely be successful, while Alexia is going "cold turkey" and will probably fail. b. Jill is using an effective step-down method, while Carmen and Alexia are using the a less successful scheduled method and "cold turkey," respectively. c. Carmen, Jill, and Alexia are all using different types of the scheduled gradual reduction method that have all proven to be effective. d. Carmen, Jill, and Alexia are all using less effective methods and should switch to the more effective method of "cold turkey."