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

Domain, select and list five items used to sample the domain in childhood o...

select and list five items used to sample the domain in childhood obesity

Definition of capitalization, Definition of capitalization is termed or sho...

Definition of capitalization is termed or shown as a process of recording & classifying the expenditure on assets in a balance sheet. Can you explain me this term more.

Calculating a confidence interval for the proportion, To study what fractio...

To study what fraction of houses for sale in Victoria has a finished basement, a researcher selected a random sample of 20 houses that were on the market. It was found that 11 of t

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

what are the types of index numbers?

Help with homework, 1. Penny Pincher, Inc. had a contribution margin of $33...

1. Penny Pincher, Inc. had a contribution margin of $33,000 on sales of $50,000 and had fixed costs of $18,000. Calculate its break-even point in sales dollars. 2. Krueger Company

Adjusting entries, The notes receivable were accepted from several customer...

The notes receivable were accepted from several customers. The notes were issued on Sept. 1,2011 and will be settled together with a 20% interest on May 31, 2011.

Characteristics of statistics, Mention the characteristics of statistics. E...

Mention the characteristics of statistics. Explain any two application of Statistics

Index number, How to solve problems of index number fixed based method

How to solve problems of index number fixed based method

Index number, Why index numbers serve as economic barometers?

Why index numbers serve as economic barometers?

Calculate the p-value and test statistic, 1.  This assignment is important...

1.  This assignment is important in providing feedback and helping to establish competency in essential skills. 2.  Answer all the questions. The questions are not of equal weig

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