Linear regression, Basic Statistics

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?

Posted Date: 2/18/2013 12:52:03 AM | Location : United States







Related Discussions:- Linear regression, Assignment Help, Ask Question on Linear regression, Get Answer, Expert's Help, Linear regression Discussions

Write discussion on Linear regression
Your posts are moderated
Related Questions
Definition of business valuation to determine the stock price of an entity. Business valuation is the value or price where a unit would be purchased at a given point in time. Usual

Mode Mode, M is the value that has the largest number of occurrence or frequency in a data set, for instance, given the following data:  11 15 16 12 15 19 17 15 we can se

SkyyMarley Airlines has determined that the price elasticity of demand for two customer segments (Coach and Business Class) is -1.35 and -2.50.  Based on their expectations of prof

How many different license plate of 5 digits can be made if the most let digit is 4 and the second digit from left is an odd number

A methodical selection of the adequate, qualified evidential issue needed to verify the equity of management''s claims in the fiscal reports or to assess whether management has wis

Absorption distributions Probability distributions which represent the number of 'individuals' (such as particles) which fail to cross the speci?ed area containing the hazards o

the first four moments of a distribution about the mean are 0,16,-64 and 162.what is the standard deviation ?

Ten students are given coaching for environmental statistics. The score obtained in tests 1 and 5 are given below: Sl No of student 1 2 3 4 5 6 7 8 9 10 Marks in 1st test 50 52 53

what is a difference between a linear model and a linear model

I will submit a file that explains what is supposed to be done in order to complete the project. And, another file will be submitted that has the blanks in it. I need the work to b