Linear regression, Basic Statistics

Assignment Help:

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?


Related Discussions:- Linear regression

Profit and loss accounting, what does it mean by sales less of goods sold a...

what does it mean by sales less of goods sold and cost less of goods sold

TRENDS , Why do we particularly omit the middle year when using the semi-av...

Why do we particularly omit the middle year when using the semi-average method to fit a trend line

The smallest total monthly cost , Each month, the firm Cashco has 50% chanc...

Each month, the firm Cashco has 50% chance that an amount of $ 1,000 will be credited In its current account, and a 50% chance that the account is debited $ 1,000. As current accou

LINEAR REGRESSION, Y=C+1075x,when x was 2, and y was 239, given that y inte...

Y=C+1075x,when x was 2, and y was 239, given that y intercept was 11. calculate the residual.

Exploratory analysis of the data, The Home Improvement Company (HIC) operat...

The Home Improvement Company (HIC) operates five stores in a large regional area. The company wished to study the relationship between x, house value ($'000) and Y, yearly expendit

Budgeting, What is the basis for factory overhead absorption

What is the basis for factory overhead absorption

Assignment, How to order an assignment?

How to order an assignment?

Probability, Find the z value corresponding if the area to the left of the ...

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

Intermediate accounting, In November and December 2010, Lane Co., a newly o...

In November and December 2010, Lane Co., a newly organized magazine publisher, received $90,000 for 1,000 three-year subscriptions at $30 per year, starting with the January 2011 i

Accounts receivable solutions, Volumes due from personal individuals or com...

Volumes due from personal individuals or companies for products, and/or solutions equipped by the condition. Records Receivable does not involve amounts due from other companies, r

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd