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

Reproduction rates, Reproduction rates: if the majority of births are thos...

Reproduction rates: if the majority of births are those of boys the population is bound to decrease while the reverse will be the case if the majority of births are girls. Similar

Simple random sampling, This type of sampling is also known as chance sampl...

This type of sampling is also known as chance sampling or probability where each and every item in the population has an equal change of inclusion in the sample and one of the poss

Factorial anova , Assessment Two tests your ability to conduct a factorial ...

Assessment Two tests your ability to conduct a factorial ANOVA and make appropriate decisions regarding any follow up comparisons. The following data set is adapted from Jaccard an

Research, tools and techniques used in quantitative research

tools and techniques used in quantitative research

Clearing account, Clearing account An account used to build up entire char...

Clearing account An account used to build up entire charges, credits so that they can be disseminated later amongst the accounts to which they are allocable, so that the net diffe

.index number, what are the types of index numbers?

what are the types of index numbers?

Calculate the probability of bmi, A file on DocDepot in the assignments fol...

A file on DocDepot in the assignments folder on doc-depot called bmi.mtp contains data on the Body Mass Index (BMI) of a population of Ottawa residents. The first column identifies

Relevant costs to decision-making , Foster Company makes 20,000 units per y...

Foster Company makes 20,000 units per year of a part it uses in the products it manufactures. The unit product cost of this part is computed as follows: Direct materials $24.70 Dir

Differance between categorical and dependent variable, Choose a topic that ...

Choose a topic that interests you that you can explore either with the 2006 GSS. You should have one primary "dependent" variable that you are interested in (Y). This variable shou

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