Advanced Placement (AP) College

Which of the following methods best limits the influence of unknown variables in an experiment?
A- Random assignment

B-Correlational study
C-Debriefing

D-Stratified sampling

E-Subject matching

Answers

Answer 1

Answer: A. Random assignment

Explanation:

Random assignment refers to using chance in experiments in order to ensure that every participant has an equal and fair opportunity to be picked into any group.

Unlike other options given such as subject matching, correlational study, debriefing, and stratified sampling, it should be noted that random assignment limits the influence of unknown variables in an experiment.

Therefore, the correct option is A.

Related Questions

Which gives the area of a rhombus with sides of length 10 in. and longer
diagonal of length 16 in.?
A 80 in.2
B 96 in.2
C 160 in.2
D 192 in.2

Answers

Answer:

B

Explanation:

Draw the Rhombus

Draw a rhombus.

At the midpoint of the given diagonal, draw a line to the enclosed angle of two of the sides.

The diagonals meet at 90 degrees.

You can use the Pythagorean Theorem to get the third side.

c^2 = a^2 + b^2

c = 10                  length of 1 side

b = 8                   This is 1/2 of 16. They diagonals meet at their midpoints

a = ?

10^2 = 8^2 + a^2

100 = 64 + a^2

a^2 = 36

a = 6

The area of one right triangle = 6*8/2 = 24

The area of all 4 right triangles = 96

It would probably be B

A timeshare company has purchased an island and begun clearing it for building the timeshare. How will the clearing of the vegetation on the island affect the surrounding ocean water? (3 points)

Algae growth will increase and destroy corals.
Animal habitats will be abundant.
Storms are likely to be more violent near islands.
Deforestation releases more CO2 into the atmosphere.

Answers

The correct answer is option A
The corals need clean and clear water that can allow the direct sunlight to pass to through it and reach corals.
The sediments and the plankton on the surface of the water can cloud the water and decreases the amount of sunlight reaching the corals (zooxanthellae)
As a result of this the coral population would decrease in population due to lack of sunlight.

What type of voice-mail greeting should you leave on your cell phone if this
number is on your résumé?

Answers

Answer:

c. a standard greeting

Explanation:

If a student does bad in school, Which of the following could help understand the teachers interpretation of the student?

Attribution theory

Arousal theory

Behavior theory

Cognitive dissonance

Cannon-Bard theory

Answers

Answer:

C.

Explanation:

The behavioral learning theory is a theory that helps to understand human behavior by examining the antecedents and consequences found in the person's environment.

In the given case, the teacher can understand the student who does badly in school by examining his antecedents and environment. This will help the teacher to understand what is making him do badly in school.

Therefore, option C is correct.

I give you 700 points if you can log in to my account and do some of my work. I'll give you 10 for now, because people be lying. I NEED HELP PLEASE HELP

Answers

what class u need help in
what class are you looking for help with??

Partial reinforcement is one of the most effective ways to maintain a high level of responding.

True or false

Answers

Answer:

True.

Explanation:

Operant conditioning can be defined as an associative learning process which involves reinforcing the strength of a behavior. Thus, the outcome depends on the response in operant conditioning.

A reinforcement of a desired behavior involves the process of strengthening a positive behavior being exhibited by an individual through the use of stimulus. Therefore, making the behavior to be exhibited in the future by the individual.

Basically, by reinforcing desired behaviors with rewards, parents, teachers and leaders can help people in building positive norms.

Behavior modification is a therapeutic process that is focused on changing any undesirable negative behavior in an individual through the use of positive or negative consequence and biofeedback.

Furthermore, behavior modification is typically based on operant conditioning principles, through negative or positive reinforcement, undesirable behaviors developed by an individual are mainly replaced with more desirable ones.

Partial reinforcement can be defined as a process which typically involves reinforcing the behavior (response) of a living organism only part of the time or sometimes rather than continuously.

Hence, one of the most effective ways to maintain a high level of responding (response) in a living organism is through the use of partial reinforcement.

In silent night when rest I took
For sorrow near I did not look
I wakened was with thund'ring noise
And piteous shrieks of dreadful voice.
That fearful sound of "Fire!" and "Fire!"
Let no man know is my desire.
What is The stanza features?


inverted syntax
a sonnet
an extended
metaphore
none of these

Answers

should be option two, a sonnet
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