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

Activity based costing, Traditional cost accounting has been based on alloc...

Traditional cost accounting has been based on allocating a subjective or calculated range of indirect expenses to direct costs. Activity Based Costing (ABC) offers an alternative a

Find karl pearson''s correlation coefficient, Find Karl Pearson's correlati...

Find Karl Pearson's correlation coefficient between the sales and expenses from the data given below:

Find out the average and probability, Question 1:      (a)  The time it...

Question 1:      (a)  The time it takes to deliver a pizza after an order is placed is uniformly distributed between 20 and 50 minutes. What is the probability that a pizza wil

Inquiry, factors considered when carrying out an inquiry

factors considered when carrying out an inquiry

Calculate the probability of company, a)  The US Food and Drug Administrati...

a)  The US Food and Drug Administration has veto power over the choice of drug names. In 2004, it used this power regularly, rejecting 36% of the names proposed by companies for re

Hypothesis testing, a clinical psychologist claims that on average, at leas...

a clinical psychologist claims that on average, at least twenty five clients visit her per week. for a random sample of 8 weeks, the following numbers of clients were recorded; 25

Cash accounting, Accounting system is one prevalent among agencies in volun...

Accounting system is one prevalent among agencies in voluntary sector. Transactions are registered in journals only when cash is in fact paid out or taken in. The primary virtue of

Employee portion of medicare tax, Employee portion of Medicare tax Medi...

Employee portion of Medicare tax Medical health insurance tax is also taken out from a worker's wage or income and is equaled by participation from the company. In other terms,

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