This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Explain autocorrelation and why its presence is an issue for the use of parametric statistical ... (Read 59 times)

corkyiscool3328

  • Hero Member
  • *****
  • Posts: 539
on: Jun 20, 2018
Explain autocorrelation and why its presence is an issue for the use of parametric statistical analyses.
 
  What will be an ideal response?

Question 2

Explain how change in level and trend from baseline to intervention phases are immediate indicators of a potentially successful intervention.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

billybob123

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 20, 2018
Answer to Question 1

Autocorrelation refers to the tendency of observations to correlate with another (rather than being truly independent observations of the dependent variable). In single subject research, one often expects to find trends in data which would indicate the presence of autocorrelation. A lag or time series analysis can definitively establish the presence or absence of autocorrelation. Its presence then precludes the use of parametric statistics because of the assumption that data points are independent of one another.

Answer to Question 2

First, change in level (particularly if there is little or no overlap of data from baseline to intervention phase) indicates the dependent variable is indicating a rapid and substantial change in responding with the introduction of the intervention. This suggests at least a rapid effect.
Second, change in trend in the dependent variable also can be an indicator of rapid effect. An ascending baseline that reverts to a descending trend (assuming reduction in behavior is desired) or vice versa (descending or flat baseline changes to ascending trend in a program to increase the target behavior) is an indicator of a rapid and positive effect.
Repeated measures and replication effects are necessary to fully establish the functional relationship.


corkyiscool3328

  • Member
  • Posts: 539
Reply 2 on: Jun 20, 2018
:D TYSM

shailee

  • Member
  • Posts: 392
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Polycystic kidney disease. Notice the presence of numerous fluid-filled sacs, or cysts, in these kid Polycystic kidney disease. Notice the presence of numerous fluid-filled sacs, or cysts, in these kid
A pharmacist can explain to a patient why medication may look different and ensure the correct ... A pharmacist can explain to a patient why medication may look different and ensure the correct ...
E9-23 Prepare income statements Explain the difference in operating income E9-23 Prepare income statements Explain the difference in operating income
Please explain the different Rf values for xanthophyll’s in paper chromatography compared to ... Please explain the different Rf values for xanthophyll’s in paper chromatography compared to ...
How does PCA reduce the dimension of a statistical problem? How do you select the reduced ... How does PCA reduce the dimension of a statistical problem? How do you select the reduced ...
AAC, Inc. is planning to issue $5,000,000 in 180-day maturity notes paying a rate of 12 percent ... AAC, Inc. is planning to issue $5,000,000 in 180-day maturity notes paying a rate of 12 percent ...
Video: Phases of mitosis

For a complete list of videos, visit our video library