Author Question: An interrupted time series design lacks a. manipulation of an independent variable b. ... (Read 84 times)

Zoey63294

  • Hero Member
  • *****
  • Posts: 539
An interrupted time series design lacks
 
  a. manipulation of an independent variable
  b. statistical control over many extraneous variables
  c. a control group
  d. external validity

Question 2

A single group of subjects is measured on a certain variable at periodic intervals and the experimental treatment is administered between two of these intervals. This is an example of the ______ design.
 
  a. repeated treatment
  b. regression discontinuity
  c. delayed control group
  d. interrupted time series



deja

  • Sr. Member
  • ****
  • Posts: 332
Answer to Question 1

c

Answer to Question 2

d



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

As many as 28% of hospitalized patients requiring mechanical ventilators to help them breathe (for more than 48 hours) will develop ventilator-associated pneumonia. Current therapy involves intravenous antibiotics, but new antibiotics that can be inhaled (and more directly treat the infection) are being developed.

Did you know?

About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.

For a complete list of videos, visit our video library