Monday
July 28, 2014

Homework Help: Stats

Posted by Tracy on Friday, March 7, 2014 at 6:01pm.

4. A least squares regression line to predict a studentís Stat145 test score (from 0-to-100) from the number of hours studied was determined from a class of 55 Stat145 students: ̂ = 48.2 + 2.21x. One student in the class studied for 18 hours and scored 82 on the exam.

(a) (5 pts.) What is the predicted value of this studentís Stat145 exam score?



(b) (5 pts.) What is the residual for this student?


(c) Explain what the slope of this least squares regression line tells us with regard to the explanatory and response variables. Be specific with regard to the value of the slope

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Math - The least squares regression line is a unique line for each data set. ...
statistics - Pre study scores versus post-study scores for a class of 120 ...
Statistics - In a study, nine tires of a particular brand were driven on a ...
statistics - Pre- study scores versus post- study scores for a class of 120 ...
stats - Can someone please help me, I have been working on this for 2 hours now ...
Stats - Suppose that you are given the following information about the freshman ...
STAT - Please check answer - In a study, nine tires of a particular brand were ...
college stats - A study wants to examine the relationship between student ...
stats - It was thought that students who dressed more neatly received better ...
Math 208 - Grade Average A student scores 65 and 82 on two different 100-point ...

Search
Members