1. It is known that 27% of all students at a local community college took precalculus...
1. It is known that 27% of all students at a local community
college took precalculus in high school. 526 students take a
voluntary response survey on the college math department website,
and 53% of these students said they took precalculus in high
school.
(a) What is the population?
(b) Is 27% a parameter or a statistic? Why?
(c) Is 53% a parameter or a statistic? Why?
(d) What might explain the large discrepancy between the 27% figure
and the 53% figure?
Homework Answers
a) Population - all students at a local community college
b) 0.27 is a parameter as this is information about the whole population.
c) 0.53 is a statistic as this is information about only the sample.
d) There is a large discrepancy between the 27% figure and the 53% figure may be due to sample bias.
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