A researcher randomly selects a sample of 100 students from the students enrolled at a particular college. She asks each student his age and calculates the mean age of the 100 students. It is
21.3 years. Based on this sample, she then estimates the mean age of all students enrolled at the College to be 21.3 years. In what way are descriptive statistics involved in this example? In what Way are inferential statistics involved?
A)When calculating the mean age of the students in the sample, the researcher is using descriptive statistics. When estimating the mean age of all students at the college, the Researcher is using inferential statistics.
B)When calculating the mean age of the students in the sample, the researcher is using inferential statistics. When estimating the mean age of all students at the college, the Researcher is using descriptive statistics.

Question

A researcher randomly selects a sample of 100 students from the students enrolled at a particular college. She asks each student his age and calculates the mean age of the 100 students. It is
21.3 years. Based on this sample, she then estimates the mean age of all students enrolled at the College to be 21.3 years. In what way are descriptive statistics involved in this example? In what Way are inferential statistics involved? 
A)When calculating the mean age of the students in the sample, the researcher is using descriptive statistics. When estimating the mean age of all students at the college, the Researcher is using inferential statistics.
B)When calculating the mean age of the students in the sample, the researcher is using inferential statistics. When estimating the mean age of all students at the college, the Researcher is using descriptive statistics.

Quizplus · Accepted Answer

The calculation of the mean age of the sample (21.3 years) is an example of descriptive statistics because it summarizes the data collected from the sample. Estimating the mean age of all students at the college based on the sample is an example of inferential statistics, as it involves making predictions or inferences about a larger population from a sample.

A Researcher Randomly Selects a Sample of 100 Students from the Students