question archive 1) A study was conducted at a local college to analyze the average GPA of students who graduated from UMUC in 2016
1) A study was conducted at a local college to analyze the average GPA of students who graduated from UMUC in 2016
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1) A study was conducted at a local college to analyze the average GPA of students who graduated from UMUC in 2016. 100 students who graduated from UMUC in 2016 were randomly selected, and the average GPA for the group is 3.5. The value 3.5 is a
a. statistic
b. parameter
c. cannot be determined
2. The hotel ratings are usually on a scale from 0 star to 5 stars. The level of this measurement is
a. interval
b. nominal
c. ordinal
d. ratio
3. The quality control department of a semiconductor manufacturing company tests every 100th product from the assembly line. This type of sampling is called:
a. cluster
b. convenience
c. systematic
d. stratified
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1. Given Information
Study: to analyze average GPA of students who graduated from UMUC in 2016.
Sampled students are 100.
Average GPA of sampled students is 3.5.
The correct answer is a. statistic
The value 3.5 is the value of mean GPA of the 100 randomly picked students. The value is serves as an estimate to mean GPA of all students who graduated in the year.
2. Given Information
Scale of hotel ratings is between 0 to 5 star.
The correct answer is c. ordinal
Ordinal level of measurement deals with categories that can be ordered in some way, unlike nominal which cannot be ordered.
3. Given Information
To check every 100th product in the assembly line.
The correct answer is c. systematic sampling
A systematic sampling is a sampling method in which first element is randomly chosen and then every nth element is taken as sample.
