# Question: A statistics professor wanted to find out the average GPA

A statistics professor wanted to find out the average GPA (grade point average) for all students at her university. She used all students enrolled in her statistics class as a sample and collected information on their GPAs to find the average GPA.

a. Is this sample a random or a nonrandom sample? Explain.

b. What kind of sample is it? In other words, is it a simple random sample, a systematic sample, a Stratified sample, a cluster sample, a convenience sample, a judgment sample, or a quota sample? Explain.

c. What kind of systematic error, if any, will be made with this kind of sample? Explain.

a. Is this sample a random or a nonrandom sample? Explain.

b. What kind of sample is it? In other words, is it a simple random sample, a systematic sample, a Stratified sample, a cluster sample, a convenience sample, a judgment sample, or a quota sample? Explain.

c. What kind of systematic error, if any, will be made with this kind of sample? Explain.

**View Solution:**## Answer to relevant Questions

Indicate which of the following variables are quantitative and which are qualitative. a. The amount of time a student spent studying for an exam b. The amount of rain last year in 30 cities c. The arrival status of an ...The following table lists five pairs of m and f values. Compute the value of each of the following: a. ∑m b. ∑f2 c. ∑mf d. ∑mf2 Briefly explain the terms population, sample, representative sample, random sample, sampling with replacement, and sampling without replacement. The number of restaurants in each of five small towns is 4, 12, 8, 10, and 5, respectively. Let y denote the number of restaurants in a small town. Find: a. ∑y b. (∑y)2 c. ∑y2 A professor wanted to select 20 students from his class of 300 students to collect detailed information on the profiles of his students. He used his knowledge and expertise to select these 20 students. a. Is this sample a ...Post your question