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

Index numbers, discuss the considerations to be born in mind when constract...

discuss the considerations to be born in mind when constracting index numbers

CALCULATIONS, CALCULATIONS OF MEAN USING PHSTAT

CALCULATIONS OF MEAN USING PHSTAT

What is a purchase allowance, What is a purchase allowance? A buy permi...

What is a purchase allowance? A buy permitting is a reduction in the customer's cost of products that it had purchased. The buy permitting is granted by the provider because of

Do a full regression analysis , #questioAssessment Part 2 (70%) You may un...

#questioAssessment Part 2 (70%) You may undertake the analysis of one of the following three case studies: (a) Crime (Minitab project file: CRIM

Hitorigram, what is difference between histogram and historigram

what is difference between histogram and historigram

Analyze data in statistical procedure , Study A                            ...

Study A                                      Study B                       Study C x 2 = 1.683                    F = 7.357                    r = .83 df = 4

Iasb and fasb, Significant factors of financial accounting In financial...

Significant factors of financial accounting In financial accounting, The IASB and FASB considered that reconsidering all the ideas would not be a practical use of their underst

Financial sales, Financial sales and building sensible financial help C...

Financial sales and building sensible financial help Conceptual structure can be identified as a structure. It is a structured design of connected goals and fundamental concept

Accounting standards in united states, United States: There are currently ...

United States: There are currently more than 10000 companies that are registered with the SEC (Securities Exchange Commission). Of these, around 1000 are non US companies. The non

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