elementary statistics 5 easy questions

In a survey of 120 students at St. Lawrence University in upstate New York, researchers found that students who claimed to have never pulled an all-nighter had an average GPA of 3.1 compared to 2.9 for those students who do claim to have pulled all-nighters.

QUESTION 1

  1. In this context, who or what is an observational unit?
    researcher
    whether or not they pulled an all-nighter
    GPA
    student

0.4 points

QUESTION 2

  1. Which of the following is the explanatory variable?
    Those students who have pulled an all-nighter
    Student
    GPA
    Whether or not they have pulled an all-nighter

0.4 points

QUESTION 3

  1. Which of the following is the response variable?
    GPA
    Whether or not the student has pulled an all-nighter
    Average GPA
    Student’s who pull all-nighters tend to have a lower GPA on average

0.4 points

QUESTION 4

  1. Is the explanatory variable categorical or quantitative?

0.4 points

QUESTION 5

  1. Is the response variable categorical or quantitative?

0.4 points