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

Mean Deviation, Mean Deviation The two methods of dispersion discussed abo...

Mean Deviation The two methods of dispersion discussed above namely range and quartile deviation are not measure of dispersion in the strict sense of te term because they do not s

Acct 1100, comprehensive problem 1 chapter4

comprehensive problem 1 chapter4

Applied problems, A company determines that the profit (P) in Pula and the ...

A company determines that the profit (P) in Pula and the advertising expenditure (e) in Pula have a linear relationship. a) Find an equation of linear relationship

Define ACCOUNTING PERIOD , Any time period specific for which economical re...

Any time period specific for which economical reports are prepared. Talk about FISCAL PERIOD.

T TEST and chi square test, Course of Study MBA 10% B.Tech 90% BBA 0% Diplo...

Course of Study MBA 10% B.Tech 90% BBA 0% Diploma 0% Annual College Fee 25,000-30,000 0% 40,000-50,000 10% 85,000-90,000 90% 90,000 Above 0% Taken an Education Loan Yes 100

Find out price, A pharmaceutical company is a monopoly in Alzheimer's disea...

A pharmaceutical company is a monopoly in Alzheimer's disease drugs and faces the following inverse demand curve: , where α is the level of advertising. Its marginal production

Balance sheet-actual reserves , (a)   The bank's excess reserves are its ac...

(a)   The bank's excess reserves are its actual reserves less required reserves. Actual reserves are given as $450 from its balance sheet. Required reserves are given by the produc

Variance analysis, Variance analysis In spending budget (or control sales ...

Variance analysis In spending budget (or control sales in general), a change is the change between an allocated, thought out or conventional quantity and the actual quantity incur

Ransfer pricing, what are the different types of transfer pricing?

what are the different types of transfer pricing?

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