Determine the coefficient of determination, Basic Statistics

Assignment Help:

1. A researcher was interested lowering the high school dropout level in his county. He measured the reading level of students entering middle school (based on a standard test) and their academic performance at the end of 10th grade (as measured by overall GPA).

Use the following data to:

A. Compute a correlation coefficient using Excel.

B. Create a scatter plot using Excel.

C. Determine the coefficient of determination. Explain what it tells you.

D. Explain in words what the correlation coefficient tells you about the relationship between reading level when entering middle school and 10th grade academic performance as measured by GPA.

E. What does it not tell you?

Student           Reading Level Score                  GPA

1                                  100                              3.0

2                                  110                              2.95

3                                  80                                2.00

4                                  75                                2.10

5                                  91                                2.00

6                                  124                              3.80

7                                  95                                2.40

8                                  82                                3.00

9                                  104                              3.10

10                                95                                2.20

11                                88                                2.24

12                                95                                3.00

13                                107                              3.45

14                                112                              3.11


Related Discussions:- Determine the coefficient of determination

Sequence networks , A group of identical synchronous motors is connected th...

A group of identical synchronous motors is connected through a transformer to a 4.16-kV bus at a remote location from the generating plants of a power system. The motors are rated

How audit works , A methodical selection of the adequate, qualified evident...

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

Illustrative statistics with statistics, Company statistics is the technolo...

Company statistics is the technology of good selection in the face of concern and is used in many professions such as financial statistics, econometrics, auditing, generation and f

Estimate the cost of producing, Consider the manufacturing system presented...

Consider the manufacturing system presented in the article by Yu and Bricker (1993). The management would like to purchase new machine tools more reliable and more high accuracy

Historigrams, Difference between historigram and histogram

Difference between historigram and histogram

Absorption costing and marginal costing, 2. From the following cost, produc...

2. From the following cost, production and sales data of Decors Motor Ltd., prepare comparative income statement for three years under (i) absorption costing method, and (ii) margi

Absorption overheads, Give a brief discussion of the existing traditional ...

Give a brief discussion of the existing traditional method of absorbing overheads

Probablity, a fair die is thrown 3 times. Let X1,X2,X3 denote the results o...

a fair die is thrown 3 times. Let X1,X2,X3 denote the results of 3 throws. What is the probablity that p[X1>X2+X3]

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