« previous next »

Author Question: What does the correlational diagram X Y mean? a. X obviously precedes Y in time. b. X is ... (Read 50 times)

faduma

  • Hero Member
  • *****
  • Posts: 528
on: Jul 8, 2018
What does the correlational diagram X Y mean?
 
  a. X obviously precedes Y in time.
  b. X is interchangeable with Y.
  c. There is a relationship between X and Y.
  d. Either X causes Y, or Y causes X.

Question 2

A researcher develops a new instrument for measuring adjustment to widowhood in dependents whose spouses were killed in armed conflict.
 
  The researcher's initial instrument contains 55 items, and he wants to trim these down to 25 or 30 but doesn't want to lose any of the main concepts. What method of statistical analysis will the researcher use, in order to pare this tool down to a manageable size without loss of content?
  a. Kendall's tau
  b. Spearman's rho
  c. Linear regression analysis
  d. Factor analysis


Mholman93

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 8, 2018
Answer to Question 1

ANS: C
Correlational analyses identify relationships or associations among variables. In the diagram, the arrow points to both variables, further confirming that one doesn't cause the other: X is merely related to Y and nothing more.

Answer to Question 2

ANS: D
Factor analysis is one of the statistical techniques designed to examine interrelationships among large numbers of variables to reduce them to a smaller set of variables, and to identify clusters of variables that are most closely linked together (factors).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Diagram of an endomembrane system Diagram of an endomembrane system
Sunset Diagram of changes in East and West from Solstice Sunset Diagram of changes in East and West from Solstice
The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue The first commercially successful typewriter, manufactured in quantity beginning in 1874, surely fue
Gram Stain Procedure Diagram Gram Stain Procedure Diagram
A simple diagram of bone marrow progenitors. All of the cells listed can be transformed to become a ... A simple diagram of bone marrow progenitors. All of the cells listed can be transformed to become a ...
plant diagram plant diagram
Video: Embryonic development - Week 3

For a complete list of videos, visit our video library