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

Compute the data using both Megastats and Excel Data, AA major razor blade ...

AA major razor blade manufacturer advertises that its twin-blade disposable razor “gets you lots more shaves” than any single-blade disposable razor on the market. A rival company

Profit margin (return on sales), Hugh Snore Bedding, Inc. has assets of $40...

Hugh Snore Bedding, Inc. has assets of $400,000 and turns over its assets 1.5 times per year. Return on assets is 12%. What is its profit margin (return on sales)?

Self adaptive ga, During the execution of the search process, the whole pop...

During the execution of the search process, the whole populations are classified into subgroups by sufficiently analyzed the individuals' state. Each individual in a different subs

Characteristic, 1. Mention the characteristics of Statistics. Explain any t...

1. Mention the characteristics of Statistics. Explain any two applications of Statistics.

Average, characteristics of a Good Average

characteristics of a Good Average

Calculate the numerical value- draw the casual tree, A, Explain how a perso...

A, Explain how a person can be free to choose but his or her choices are casually determined by past event B , Draw the casual tree for newcomb's problem when Eve can't perfectl

How does an amplifier work, Expertsmind.com  brings you unique solution in ...

Expertsmind.com  brings you unique solution in  physics An audio amplifier setup will have a power amplifier and usually a preamplifier.  The preamplifier takes the wea

Definition of batch costing and methods, Batch costing and method of costin...

Batch costing and method of costing whereby identical units produced are treated as a single unit & the cost incurred is shown to the whole of that batch instead of each individual

Capital account stockholders proprietorship, Define of capital account refl...

Define of capital account reflecting the funds invested in an entity. Capital account is termed as the account reflecting the funds invested in the entity by the stockholders or pa

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