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

Probability, What is probability 0.10 called?

What is probability 0.10 called?

Spss data analysis assignment, At the end of their first year of teaching, ...

At the end of their first year of teaching, 11 teachers were jointly ranked by two school administrators to reflect their relative degree of teaching competence. Unknown to the adm

Interpolation and extrapolation, What is meant by interpolation and extrapo...

What is meant by interpolation and extrapolation. State the assumptions used for interpolation and extrapolation

Calculate the expected ratio, 1. Cross BBGG X bbgg. Assume B and G are l...

1. Cross BBGG X bbgg. Assume B and G are linked together on an autosome. Show F2 and give expected results. 2. Cross BBGG x bbgg. Assume B and G are not linked. Show F2 an

Determine the probability - baye theorem, In a suburban community, 30% of t...

In a suburban community, 30% of the households use Brand A toothpaste, 27% use Brand B, 25% use Brand C, and 18% use Brand D. In the four groups of households, the proportions of r

Violence in the Media, I need help on writing a paper about this title

I need help on writing a paper about this title

Draw a scatter diagram relating cigarette, The following data relating ciga...

The following data relating cigarette smoking and death rates for lung cancers in 14 states in the USA. The data are based in part on records concerning 1960 cigarette tax receipts

Probability, The monthly income of a company employee is normally distribut...

The monthly income of a company employee is normally distributed with the mean Rs. 20,000 and standard deviation of Rs. 5000. a) Find the probability that an employee earns more th

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