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

Cash disbursements, Cash disbursements Cash disbursements are any or more ...

Cash disbursements Cash disbursements are any or more moneys [egg, checks: money: warrants: credit, debit card amounts: & EFTs [Electronic Fund Transfers) paid by the state during

Revenues , why are revenues an important number in financial statements?

why are revenues an important number in financial statements?

Construct the frequency distribution, 1) Here we are given a raw data and w...

1) Here we are given a raw data and we are supposed to construct the frequency distribution of that data and plot the histogram of it. The dataset contains the values from 1 to

Operational research, what is the defination of model in operational resea...

what is the defination of model in operational research?

One way to use contiguous allocation of the disk, One way to use contiguous...

One way to use contiguous allocation of the disk and not suffer from holes is to compact the disk every time a file is removed. Since all files are contiguous, copying a file requi

Distribution of the sample mean, 1. Suppose that a population has mean, µ, ...

1. Suppose that a population has mean, µ, and standard deviation, σ. What does the central limit theorem tell us about the distribution of the sample mean?

Free hand in measurig trend, advantages and disadvantages of free hand in m...

advantages and disadvantages of free hand in measurig trend

Business tax accounting , #questLester rents his vacation home for 6 months...

#questLester rents his vacation home for 6 months and lives in the home during the other 6 months of 2010. The gross rental income from the home is $4,500. For the entire year, rea

DATA MINING, please break this problem down to laymen term so that I unders...

please break this problem down to laymen term so that I understand how you arrived at the answer. 1. AllElectronics caries 1000 products, P1, … P1000. Consider customers Ada, Bob,

Balance sheet assignment, The High Company Balance Sheet Assignment (to be...

The High Company Balance Sheet Assignment (to be completed using Microsoft Excel) -Create T accounts for each transaction #1-10 -Create a trial balance -Create Income Statement -

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