The single greatest cause of preventable mental retardation worldwide is:
a. vitamin A deficiency.
b. iodine deficiency.
c. general semi-starvation conditions.
d. all of the above
e. none of the above
B
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The ten largest world mega-regions are the same whether they are chosen based on the value of economic activity or based on the population size
Indicate whether this statement is true or false.
Community studies typically employ which research technique?
A. survey research B. direct observation C. direct sampling D. None of these answers is correct.
Answer the following statement(s) true (T) or false (F)
John asked his respondents to state their age, height, weight, and number of minutes they exercise daily as numbers. The answers provided are examples of a nominal variable.
Qualitative research often involves ______.
a. rejecting or failing to reject the null hypothesis b. testing one or more hypotheses c. knowing the strength, direction, and association of variables d. using straight quotes from texts to provide rich and artistic detail