hypothesis

Question 1

what is a hypothesis ?

Answer 1

A clear, precise, testable statement that states the relationship between the variables being investigated

Question 2

what is a directional hypothesis?

Answer 2

Testable statement that states the direction of the difference or relationship.

Question 3

what is a non directional hypothesis?

Answer 3

Testable statement that does not state the direction of the difference or relationship.

Question 4

what is a null hypothesis?

Answer 4

A statement predicting no effect or no difference between variables.

Question 5

Example of a directional hypothesis?

Answer 5

People who sleep for 8 hours will recall more words than those who sleep for 4 hours

Question 6

Example of a non-directional hypothesis?

Answer 6

There will be a difference in word recall between people who sleep for 4 hours and 8 hours.

Question 7

Example of a null hypothesis?

Answer 7

There will be no difference in word recall between people who sleep for 4 hours and 8 hours.

Question 8

When should a directional hypothesis be used?

Answer 8

When previous research clearly suggests the expected outcome.

Question 9

When should a non-directional hypothesis be used?

Answer 9

When there’s no clear prior research or uncertainty about the direction of the effect.