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

Find confidence interval, A sample of 40 golfers showed that their average ...

A sample of 40 golfers showed that their average on a particular course was 94 with a standard deviation of 6. a. Find the 95% confidence interval of the mean score for all golf

Average velocity profile-actual velocity profile, 1)  You are developing a ...

1)  You are developing a sampling protocol whereby you're going to insert a probe into a turbulent flow in a circular conduit of radius R. a. Using a description of a velocity p

Sampling, Advantages of sampling over population

Advantages of sampling over population

Index numbers, discuss the considerations to be born in mind when constract...

discuss the considerations to be born in mind when constracting index numbers

Explain public budget, Explain public budget A plan of financial process ...

Explain public budget A plan of financial process embodying an estimate of proposed expenditures and any other expenditure for a given era of time and the proposed means of finan

Icmap, 03 (a) Explain the term capital rationing and suggest the criteria t...

03 (a) Explain the term capital rationing and suggest the criteria to be used in ranking projects under capital rationing. (05) (b) There are three projects X Y and Z having follow

Standard deviation, Standard Deviation: The standard deviation is a gauge o...

Standard Deviation: The standard deviation is a gauge of the variance, or dispersion, of the market return over its average returns. Thus Standard Deviation gives an insight of tot

What is Nuclear holocaust, Nuclear holocaust It is the name given to large...

Nuclear holocaust It is the name given to large scale destruction and devastation that would be caused by the use of nuclear weapon. The radioactive waste will hang like a cloud i

Estimate the parameters of the normal distribution, The sizes of 15 Califor...

The sizes of 15 California earthquakes are given below. 6.8   6.6  7.5  6.2  6.5  7.1  8.3  5.9  6.1  6.9  7.0  6.2  5.9  6.3  7.3 (a)  Assuming normal distribution for the s

Compute the test statistic, Choose a variable and collect data consisting o...

Choose a variable and collect data consisting of at least 30 values. Before collecting the data, decide what a likely average might be, then complete the following: a. Write a b

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