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

Author Question: Selection bias can be a potential threat to internal validity when subjects are assigned to groups ... (Read 95 times)

HCHenry

  • Hero Member
  • *****
  • Posts: 591
on: Jul 13, 2018
Selection bias can be a potential threat to internal validity when subjects are assigned to groups
 
  a. in a random fashion
   b. on the basis of different criteria for the different groups
  c. in a way that insures that similar people are in each group
  d. none of the above

Question 2

Covariance means to vary together. What is the opposite of covariance in a bivariate
  relationship?
 
  A) scattergram B) anticovariance
  C) univariance D) statistical independence


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

jesse.fleming

  • Sr. Member
  • ****
  • Posts: 301
Reply #1 on: Jul 13, 2018
Answer to Question 1

B

Answer to Question 2

D


HCHenry

  • Member
  • Posts: 591
Reply 2 on: Jul 13, 2018
:D TYSM

nguyenhoanhat

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Listening to Normal Speech or Its Prosodic Components Functional MRI scans were made while subjects Listening to Normal Speech or Its Prosodic Components Functional MRI scans were made while subjects
Vitamins Found Widely in the Food Groups Vitamins Found Widely in the Food Groups
The two skills of the element Selection of Alternatives The two skills of the element Selection of Alternatives
On the Flexible Item Selection Task (FIST) children are presented with three cards On the Flexible Item Selection Task (FIST) children are presented with three cards
bird internal bird internal
Evolution of internal membranes Evolution of internal membranes
Video: Decubitus Ulcer

For a complete list of videos, visit our video library