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

Statistics, Question 1 A courier company conducted a brainstorming sessio...

Question 1 A courier company conducted a brainstorming session amongst drivers to ascertain the reasons why it was unable to deliver items to households, always right first time.

state the null and alternate hypotheses, The mean length of the work week ...

The mean length of the work week for the population of American workers was reported to be 39.2 hours with a standard deviation of 4.8 hours in September, 2000. A researcher wants

Concept of depreciation briefly, concept of Depreciation briefly. The pr...

concept of Depreciation briefly. The primary idea of the Depreciation is to create off the value of worried resources by a certain amount as per prescribed. Devaluation is incur

Calculate the unit of omputer peripheral device, Northern Hi-Tec Electronic...

Northern Hi-Tec Electronics Limited manufactures six computer peripheral devices: internal modems , external modems , circuit boards , CD drives , hard disk drives , and memo

Linearity, The weight in Kg for each person was matched to their intake of ...

The weight in Kg for each person was matched to their intake of fat per day in Grams.  9 people were selected with the following results. Weight (Xi)         Fat (Yi) 45

Marginal and absorption Costing Problem solving, can you provide me the pro...

can you provide me the problem with the solution base above?

Time series, discuss the nature and causes of the components of an economic...

discuss the nature and causes of the components of an economic time series?

Estimate the proportion of lake trout with lamprey scars, In a certain lake...

In a certain lake a limnologist wishes to estimate the proportion of lake trout with lamprey scars. (a) How large of a random sample should be taken if the limnologist has no pr

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