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

Benefits of financial sales, Expertsmind.com offering Uses of Financial Ac...

Expertsmind.com offering Uses of Financial Accounting Financial Accounting Sales performs important and useful part by creating the details for offering solutions to many conc

#measures of central tendency, #what is the importance of measures of centr...

#what is the importance of measures of central tendency to Human resource management

Probability, what is an exclusive probability

what is an exclusive probability

Qualitative survey and data analysis, Data Analysis: A qualitative surve...

Data Analysis: A qualitative survey was conducted in order to understand the impact of international accounting standards. To start with, a secondary research was done to unders

Regression, Sales from a leading motor dealership were monitored over the p...

Sales from a leading motor dealership were monitored over the past four years. The sales figures are presented in the accompanying table. Year Quarter 1 Quarter 2 Quarter 3 Quarter

Absorption costing and marginal costing, 2. From the following cost, produc...

2. From the following cost, production and sales data of Decors Motor Ltd., prepare comparative income statement for three years under (i) absorption costing method, and (ii) margi

Midterm & final exams , Can you all help with midterms and final exams? mea...

Can you all help with midterms and final exams? meaning getting the assignment done within a couple hours?

Determine the tax implications, Your firm purchased a line of computer equi...

Your firm purchased a line of computer equipment for $1.5M four years ago. It is assigned a CCA rate of 20% and the firm has a tax rate of 35%. At the end of this year (year 4 for

Report on the residual plots, Report on the residual plots – are the assump...

Report on the residual plots – are the assumptions of the regression met

Compute three protected tests , compute three protected t tests to compar...

compute three protected t tests to compare all possible pairs of means.  Also, for α = .05, what is the value of LSD ? Which pairs are significantly different from one another,

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