Which of the following is an advantage of cluster sampling over simple random sampling in many cases?
a. the error of estimation is lower
b. the respondents may be closer together geographically
c. it is more representative of the population
d. it is a nonprobability sampling procedure
e. the required sample size is smaller
B
Psychology
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According to Erikson, the psychological conflict of the first year is
A) autonomy versus shame and doubt. B) basic trust versus mistrust. C) initiative versus guilt. D) industry versus inferiority.
Psychology
According to Siegler and Robinson (1982), children cannot tell which is more, seven flowers or six flowers, until they are ___ years old
a. two b. four c. six d. eight
Psychology