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

Calculate the average profit, A machine is used for machining of a manufact...

A machine is used for machining of a manufactured product. At the beginning of each business day inspection reveals the machine's condition. There are three possible states: 0, 1 a

Statistics question, 1. A sample from 16 different farms across Quebec show...

1. A sample from 16 different farms across Quebec shows that the hay production in bales per acre is normally distributed N(100,50). a. (2p )What is the probability that a random

Surveys by mailing of questionnaires, The researcher and the respondents d...

The researcher and the respondents do not come in contact with each other if this method of survey is adopted Questionnaires are mailed to the respondents with a request to re

Define Nuclear force, Nuclear force Is a short range force extending upto...

Nuclear force Is a short range force extending upto 10 fm. It is fifty-sixty times stronger than electromagnetic force. Nuclear force is independent of charge. Nuclear force betw

What is owner’s equity, What is owner’s equity? Owner’s value is on...

What is owner’s equity? Owner’s value is one of the three primary elements of a single proprietorship’s stability piece and bookkeeping situation. Owner’s value symbolizes

Historigram, what is historigram in statistics please give the problems and...

what is historigram in statistics please give the problems and there solution in statistics as soon as possible

Current Liabilities and Payroll , Prior to the last payroll period of the c...

Prior to the last payroll period of the calendar year, the cumulative earnings of Employer A were $105000. The earnings for the last payroll period of the year which will be paid o

.index number, what are the types of index numbers?

what are the types of index numbers?

Assignment, i want you to make my buisiness statistics assignment

i want you to make my buisiness statistics assignment

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