Author Question: The _________ refers to the difference among different astronomersestimation of the time and ... (Read 78 times)

londonang

  • Hero Member
  • *****
  • Posts: 540
The _________ refers to the difference among different astronomersestimati on of the time and position of astral events.
 
  a. personal equation
  b. simple reaction
  c. choice reaction
  d. subtractive logic

Question 2

Differential history effects are a threat to internal validity for which of the following designs?
 
  a. differential research design
 b. one-group pretestposttest design
 c. pretest-posttest nonequivalent control group design
  d. longitudinal design



TDubDCFL

  • Sr. Member
  • ****
  • Posts: 357
Answer to Question 1

A

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

For a complete list of videos, visit our video library