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

Describe the location of firms and equilibrium , Take the Hotelling's locat...

Take the Hotelling's location model (the linear city) discussed in class for the case in which all firms are required to charge the same fixed price. Further assume that firms choo

Time series, discuss the nature and causes of the components of an economic...

discuss the nature and causes of the components of an economic time series?

Capital assets, Capital assets Assets which meet the state''s capitalizati...

Capital assets Assets which meet the state''s capitalization strategy such as ground: developments to l&: easements: buildings: leasehold improvements: means of transportation: or

Marginal and absorption Costing Problem solving, can you provide me the pro...

can you provide me the problem with the solution base above?

Describing univeriate data, X 420 610 625 500 400 550 650 480 565 Y 2.80 3...

X 420 610 625 500 400 550 650 480 565 Y 2.80 3.60 3.75 3.00 2.50 2.70 3.50 3.90 2.0 2.95 3.30 Calculate te covarience anf the correlatio coeficient. Comment on the relationship be

Mean and standard deviation, We have two applicants who are applying for a ...

We have two applicants who are applying for a job. They both took the high school exit exam, but different ones. Shannon took the ACT and scored 26, Frank took the SAT scored 1350.

12 questions, normal distribution and the sampling distributions of sample ...

normal distribution and the sampling distributions of sample proportions and sample means, but without confidence interval

Capital grants, Capital grants Grants that are restricted for the acquisit...

Capital grants Grants that are restricted for the acquisition: structure: renewal of capital assets associated with an accurate program, Refer to GRANTS & OPERATING GRANTS

Card custodian statement, Card custodian statement A zero poise due declar...

Card custodian statement A zero poise due declaration: listing all transactions throughout the billing period: that is sent to the buy card custodian by the purchase card supplier

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