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

Define salaries, Define Salaries Incomes are usually associated with "wh...

Define Salaries Incomes are usually associated with "white-collar" employees such as employees in offices, supervisors, experts, and experts. Paid employees are often paid semi-

Hypothesis and statistical test, College administrators across the country...

College administrators across the country have become very concerned after noticing an increase in the number of deaths in college students from binge drinking.  Several psychologi

Conversion bonds, i need problems and their answers in a simplified way to ...

i need problems and their answers in a simplified way to understand the material because im really having troubles understanding how to solve conversion bonds and share warrants pr

Tootsie roll industries, I am in need of your help again. First and foremo...

I am in need of your help again. First and foremost, I thought I had created an account, but none could be found. In any event here is my assignment. Should you decide that you

Correlation, difference between positive and negative correlaiton

difference between positive and negative correlaiton

Factor anaylsis statistical method , First of all, thank you very much for ...

First of all, thank you very much for your help. I have a mixes data base, categorial variable, liclekt scale on 5 and 4, and continous variable, and several dummy. I would need h

QT, Following is the trend equation for a time series data on a monthly bas...

Following is the trend equation for a time series data on a monthly basis for years 2007 to 2009: Y=2.375+0.895X. Find Y for 2nd quarter of 2010.

Capital projects funds, Capital projects funds Capital projects funds are ...

Capital projects funds Capital projects funds are used to account for the acquisition &/or structure of major capital facilities [other than those financed by proprietary funds &

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