The journal of information science study

Reference no: EM131111678

Refer to the Journal of Information Science study of the relationship between the fraction y of documents retrieved using Medline and the number x of terms in the search query, Exercise 9.39. (p. 502)

a. The value of r was reported in the article as r =.679. Interpret this result.

b. Calculate the coefficient of determination, r², and interpret the result

Exercise 9.39

One of the most common types of "information retrieval" processes is document-database searching. An experiment was conducted to investigate the variables that influence search performance in the Medline database and retrieval system (Journal of Information Science, Vol. 21, 1995). Simple linear regression was used to model the fraction y of the set of potentially informative documents that are retrieved using Medline as a function of the number x of terms in the search query. based on a sample of n = 124 queries. The results are summarized below:

a. Is there sufficient evidence to indicate that x and y are linearly related? Test using α = .01.

b. If appropriate. use the model to predict the fraction of documents retrieved for a search query with x = 3 terms.

Reference no: EM131111678

Questions Cloud

Express promise or representation : Unless a private seller makes an express promise or representation to the buyer when selling goods, the buyer will have no remedy if those goods turn out to be defective.

Illustrate the similarities and differences : This assignment uses a rubric. Please review the rubric prior to beginning the assignment to become familiar with the expectations for successful completion.

Are there any outliers in the given data : Does it appear from inspection that there is a relationship between the variables? Why or why not? Calculate the least-squares line. Put the equation in the form of: y = a + bx

Identify an organizational structure : Identify an organizational structure that might work well to help blend the new project with the existing business structure.

The journal of information science study : Refer to the Journal of Information Science study of the relationship between the fraction y of documents retrieved using Medline and the number x of terms in the search query, Exercise 9.39. (p. 502)

Economic dimensions-political dimensions : Write a short 2-3 page essay. Use Times New Roman 12, and keep double space. Write about any topic that relates to this course and its themes: Sociology of the Internet. (Economic dimensions, political dimensions, cultural dimensions, or social di..

Marketable receipt for funds deposited in a bank : A negotiable certificate of deposit is a marketable receipt for funds deposited in a bank for a specified period of time at a specified rate of interest (Lee, Finnerty, and Norton, 1997).

Integration on public relations practice : What has been the impact of convergence and integration on public relations practice? What major ethical and legal considerations should public relation personnel have? Be specific.

Determine the equilibrium curve for the solvent extraction : The attached flow sheet is associated with the solvent extraction-electowinningplant for which you work. All of the numbers represent the copper concentration in g/L and all the parenthetical numbers represent the sulfuric acid concentration in g/L. ..

User Account

All Pages