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

Kurtosis, define kurtosis with relevant examples

define kurtosis with relevant examples

Oecd database exercise , For this second assignment you will have to use th...

For this second assignment you will have to use the OECD database to investigate possible changes in the policy preferences of Western welfare states. You have to develop (i) an in

Time series, what are the characteristics

what are the characteristics

Time quantization and amplitude quantization, A sine wave is sampled at int...

A sine wave is sampled at interval Tand quantixed using N=2bits precision over the range ±1. The sine wave has peroid τ, and T is chosed such that T = 1/8τ Plot one cycle of the

Homework, Problems 15. An art professor was interested in seeing what si...

Problems 15. An art professor was interested in seeing what size group is best to prime the pump so to speak to encourage strangers to gather together in front of various exhibi

Define best appraise , Define best appraise To make and calculate of valu...

Define best appraise To make and calculate of value of a resource, for example a good financial commitment or financial commitment resource, particularly of the value of property

Multi stage sampling, Multi stage Sampling: This is a further development o...

Multi stage Sampling: This is a further development of cluster sampling. This techniques is meant for big inquiries extending to a considerably large l geographical area like an en

#binomial probability, they gave me n=30 and p=.23 to get the answers for P...

they gave me n=30 and p=.23 to get the answers for P(20,x,23)= and P(x.23)=

Production cost, If q=2,TP=450 and AP=225, what is MP. How can I figure out...

If q=2,TP=450 and AP=225, what is MP. How can I figure out what my marginal product will be?

Ex. 3-12, EXERCISE 3-12 Computing Predetermined Overhead Rates and Job Cos...

EXERCISE 3-12 Computing Predetermined Overhead Rates and Job Costs [LO1,LO2, LO3, LO7] Kody Corporation uses a job-order costing system with a plantwide overhead rate based on ma

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