Choose the best answer. Justify for full credit. a) A study was conducted at a l
ID: 3233003 • Letter: C
Question
Choose the best answer. Justify for full credit.
a) A study was conducted at a local college to analyze the average GPA of students graduated from UMUC in 2016. 100 students graduated from UMUC in 2016 were randomly selected, and the average GPA for the group is 3.5. The value 3.5 is a
(i) statistic
(ii) parameter
(iii) cannot be determined
b) The hotel ratings are usually on a scale from 0 star to 5 stars. The level of this measurement is
(i) interval
(ii) nominal
(iii) ordinal
(iv) ratio
(c) The quality control department of a semiconductor manufacturing company tests every 100th product from the assembly line. This type of sampling is called:
(i) cluster
(ii) convenience
(iii) systematic
(iv) stratified
Explanation / Answer
a) (i) statistic
(since its of a sample, its called statistic)
b) (iii) ordinal
(rating on a scale is ordinal)
c) (iii) systematic
(if sample is taken at a fixed interval, its called systematic sampling)