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

Revenue Recognition & Depreciation, Question 2 Pankratov Lakes is a new rec...

Question 2 Pankratov Lakes is a new recreational real estate development that consist of 500 Lake front and lake view lots. As a special incentive to the first 100 buyers of lake v

Define the z score, A. Describe what a z score is. B. Explain why they c...

A. Describe what a z score is. B. Explain why they can be used to compare scores from different distributions.

Peanuts and cost accounting, EFF EX: Joe, you said you put in these peanuts...

EFF EX: Joe, you said you put in these peanuts because some people ask for them, but do you realise what this rack of peanuts is costing you? JOE: It ain''t gonna cost. ''sgonna be

calculate the chi-square statistic, The table below shows a breakdown of w...

The table below shows a breakdown of women between the ages of 20 to 64 who have had a Pap smear--it shows the number in each age group cross tabulated with the time of their last

The decision tree costs and benefits of present value, Question: Imagin...

Question: Imagine that your client, Hillside County Forest Preserve (HCFP), is considering how best to protect their natural lagoons.  They have asked for your help, and you ha

Derivations, example of derivations in daily life

example of derivations in daily life

What is b2b, Definition of B2B? This is known as the abbreviation of Busin...

Definition of B2B? This is known as the abbreviation of Business to Business. Abbreviation Of Business To Business

Applied problems, A company determines that the profit (P) in Pula and the ...

A company determines that the profit (P) in Pula and the advertising expenditure (e) in Pula have a linear relationship. a) Find an equation of linear relationship

Ordering cost, 1) Define and explain the following: i) Ordering cost ii) Sa...

1) Define and explain the following: i) Ordering cost ii) Safety stock iii) Re-order point 2) Profit Volume Chart. 3) Discuss the various techniques of financial statement analysis

Allocation surrounding to accounts, Allocation surrounding to accounts An a...

Allocation surrounding to accounts An aspect of a lump-sum appropriation that is specific for expenses by particular government models and/or for particular requirements, actions,

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