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

Author Question: A major difference between experimental research and ex post facto research is that a. in ... (Read 214 times)

Capo

  • Hero Member
  • *****
  • Posts: 545
on: Jun 20, 2018
A major difference between experimental research and ex post facto research is that
 
  a. in experimental research there are two or more groups of subjects to be compared, while in ex post facto research one group of subjects is being studied.
  b. a test of significance is applied to the data collected in an experiment, while descriptive-type statistics are used to analyze data collected in an ex post facto research.
  c. in experimental research the researcher is always testing a hypothesis, while in ex post facto research hypothesis testing is not involved.
  d. in experimental research manipulation of variables is possible, while in ex post facto it is not possible to manipulate the variables.

Question 2

Choose the internal validity problem that is associated with the situations listed. Presence of the observer increases scores.
 
  a. history
  b. maturation
  c. experimenter effect
  d. statistical regression
  e. diffusion


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

juliaf

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 20, 2018
Answer to Question 1

D

Answer to Question 2

C


Capo

  • Member
  • Posts: 545
Reply 2 on: Jun 20, 2018
Gracias!

kishoreddi

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.

Did you know?

Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.

Summary of greenhouse experimental design and results Summary of greenhouse experimental design and results
Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world, Phylogenetic tree based on the distribution of 120 alleles in 42 populations from around the world,
Teres major Teres major
Difference between Functional and Cross-Functional team Difference between Functional and Cross-Functional team
Disease: Major environmental health problems Disease: Major environmental health problems
Major Neurotransmitters and Their Effects Major Neurotransmitters and Their Effects
Video: Coaductile pathway, Timing of contraction signal & Conduction system and ECG

For a complete list of videos, visit our video library