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
What is cash flow net of tax? I view income net of tax as the money spent without the earnings tax savings when the quantity is insurance deductible on the corporation’s earnin

Question 1. In 2009, Research New Zealand conducted a survey on small businesses in New Zealand. Small businesses were defined as enterprises with 19 or fewer employees. 501 small

what are different method of classifying overhead? indicate the advantag

pzl give me ans


Find the z value corresponding if the area to the left of the z is 0.9452

Budgeted accounts Accounts that are theme to the misappropriation or sometimes to appropriation and/or allotment process. Refer to APPROPRIATION and portion.