« previous next »

Author Question: In order to manipulate a variable, there must be at least _____ different levels of the variable. ... (Read 141 times)

B

  • Hero Member
  • *****
  • Posts: 570
on: Jun 19, 2018
In order to manipulate a variable, there must be at least _____ different levels of the variable.
 
  a. one c. three
  b. two d. four

Question 2

In order to experimentally prove that the independent variable is the cause and the dependent variable is the effect we would have to _____
 
  a. observe the dependent variable in the presence of the independent variable
  b. observe the dependent variable in the absence of the independent variable
  c. observe changes in the independent variable when the dependent variable is manipulated
  d. observe changes in the dependent variable when the independent variable is manipulated


cuttiesgirl16

  • Sr. Member
  • ****
  • Posts: 345
Reply #1 on: Jun 19, 2018
Answer to Question 1

B
The requirement is that there be at least two different levels of the independent variable.

Answer to Question 2

D
We must change (manipulate) the cause (independent variable) and observe concomitant changes in the effect (dependent variable).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

Human body: levels of organization. Human body: levels of organization.
In older adults, higher education is related to higher levels of ego development. In older adults, higher education is related to higher levels of ego development.
A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ... A typical variable cam timing control valve. The solenoid is controlled by the engine computer and ...
Variable Gases: Carbon Dioxide Variable Gases: Carbon Dioxide
Variable Gases: Methane Variable Gases: Methane
An overview of the levels of organization in nature An overview of the levels of organization in nature
Video: Haustral churning, Gastrocolic reflex and mass peristalsis & Defecation

For a complete list of videos, visit our video library