Statistics

Which of the following is an accurate description of Simpson's paradox?


When groups of data are aggregated, an association can get stronger because of a confounding variable. That confounding variable is usually the number of observations in different groups of data.

When groups of data are combined, an association can get stronger because of a lurking variable. That lurking variable is usually the number of observations in the different groups of data.

When groups of data are separated, an association can get stronger because of a lurking variable. That lurking variable is usually the number of observations in the different groups of data.

When separate groups of data are combined, an association can reverse direction because of a lurking variable that was lost when the different groups of data were lumped together.

----

For the table below which of the following are true?
I. The sum of the values of all the conditional distributions must be 1.

II. Temperature and crime rate appear to be related (the warmer the temperature, the higher the crime rate).

III. The conditional distribution for Normal Crime Rate is roughly similar to the marginal distribution Temperature.


Crime Rate
________Below___ Normal____ Above
Temp. __Below 12 , 8 , 5
___ ___ Normal 35 , 41 , 24
______ Above 4 , 7 , 14




A. I only
B. II only
C. II and III only
D. III only
E. I and III only

asked by Anonymous
  1. http://www.google.com/search?client=safari&rls=en&q=Simpson's+paradox&ie=UTF-8&oe=UTF-8

    What table?

    posted by PsyDAG
  2. The table is supposed to be that ugly fail that says "Crime Rate" at the top, "below," "normal," and average beneath it, etc.

    posted by Anonymous

Respond to this Question

First Name

Your Answer

Similar Questions

  1. Statistics

    Which of the following is an accurate description of Simpson's paradox? When groups of data are aggregated, an association can get stronger because of a confounding variable. That confounding variable is usually the number of
  2. Statistics

    Which of the following is an accurate description of Simpson's paradox? When groups of data are aggregated, an association can get stronger because of a confounding variable. That confounding variable is usually the number of
  3. scientific method

    http://classweb.gmu.edu/biologyresources/writingguide/ScientificPaper.htm What are the steps of the scientific method? I think this should add a little more to answering your questions. First you have to decide what question(s)
  4. Science

    A biology class wants to perform an experiment to investigate the effect of different colors of light green, yellow, red, and clear cellophane and plant three seeds in each one. What part do the three seeds experiment? A.
  5. Math

    Which associations best describe the data in the table? Variable m 9 6 5 1 3 4 2 8 7 Variable n 33 24 18 3 10 14 7 32 26 Choose exactly two answers that are correct. A. linear association B. negative association C. nonlinear
  6. Statistics

    A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its
  7. Statistics

    A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its
  8. statistics

    A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss. She randomly assigns half of a group of overweight persons to a treatment group who are given the herb with instructions for its
  9. methods of research

    4. Gerontologists interested in the effects of aging on reaction time have two groups of subjects take a test in which they must indicate as quickly as possible whether a probe word is a member of a previous set of words. One
  10. Statistics

    Tuyns et al. (1977) carried out a case-control study of esophageal cancer in the region known as Ille-et-Vilaine in Brittany, France. The referring data set is oesoph_new.dta, and use logistic regression models to answer each of

More Similar Questions