Linear regression, Basic Statistics

Question:

Students in a science class have just received their grades on the first test.  The instructor has provided information about the first test grades in some previous classes as well as the final average for the same students.  Some of these grades have been sampled and are as follows:

Student

1

2

3

4

5

6

7

8

9

1st Test Grade

98

77

88

80

96

61

66

95

69

Final Average

93

78

84

73

84

64

64

95

76

a) Develop a linear regression model that can be used to predict the final course average based on the first test grade for these nine students.  Provide the correct independent and dependent variables and provide the linear regression relationship in terms of these independent and dependent variables.

b)  Predict the final average of a student who made an 83 on the first test. 

c) Would you recommend using this relationship for forecasting the final averages?  Why?  Base your recommendation on analytical reasons. 

d)  Suppose a student scored a 41 on the first test.  Predict the final average of a student who had this score?  What cautions would you recommend about using this linear regression relationship for predicting a final average?

Posted Date: 2/18/2013 12:52:03 AM | Location : United States







Related Discussions:- Linear regression, Assignment Help, Ask Question on Linear regression, Get Answer, Expert's Help, Linear regression Discussions

Write discussion on Linear regression
Your posts are moderated
Related Questions
How do you think the banking sector is going to get impacted?   Manager 1: The impact of the shift to IFRS is going to be much higher in the banking sector. This impact woul

A basis used in processing the quantity of advantages to be created regularly to a finance or consideration so that the complete advantages plus the complicated income thereon will

Is Venus geologically active? -It is almost certain that Venus, a planet almost of the same size as earth is geologically active. Recent studies show that there is Volcanic and t

charlie removes the 12 face cards from a standard deck of cards then shuffles the face cards together on their own. He selects 2 cards from the pile. The probability that the first

which method is better for new product to gather the information they need,primary data or secondary data?

Fenn Museum, a nongovernmental not-for-profit organization, had the following balances in its statement of functional expenses: Education $300,000 Fundraising 250,000 Management an

Questions In a regression analysis, a nurse researcher found a correlation of .82 between pain relief scores and satisfaction with nursing care.  She also calculated the follow

What is hurdle rate? In investment spending budget, challenge amount is the minimal amount that an organization desires to earn when getting a venture. Hence the challenge amou

(A) Find the binomial probability P(x = 5), where n = 15 and p = 0.50. (B) Set up, without solving, the binomial probability P(x is at most 5) using probability notation. (C) H

Why are Jovian moons more geologically active than small rocky planets? - Ices deform and melt at much lower temperatures than rock, allowing icy volcanism and tectonics at sur