Hypothesis

Question 1

Directional Hypothesis (one tailed hypothesis)

Answer 1

a testable statement which predicts the outcome of the experiment in a particular direction, using words such as “better, faster, more likely, less likely, slower, quicker”

Question 2

Non- directional Hypothesis (two tailed hypothesis)

Answer 2

a testable statement which predicts the outcome of an experiment but not which direction the outcome will be, using words such as “difference or affects”

Question 3

Null Hypothesis

Answer 3

This makes a prediction that the outcome of the experiment will be due to chance alone. Experiments have an experimental AND a null so the outcome of the experiment is always predicted.

Question 4

Null hypothesis is ALWAYS written as:

Answer 4

“there will be NO affect of IV on DV if there is,it’s due to chance”

Question 5

There will be a significant positive relationship between the number of hours sleep you get and scores on a test

Answer 5

Dependant variable

Question 6

There will be no relationship between footballers wages and the number of girlfriends they have,if there is it’s due to chance.

Answer 6

null hypothesis

Question 7

There will be a correlation between the amount of rainfall in Wolverhampton and the number of wellies bought this year.

Answer 7

non- directional variable.

Question 8

Extraneous Variable

Answer 8

A variable other than the independent variable that could affect the dependent variable if not controlled.

Question 9

Confounding variable

Answer 9

A type of extraneous variable that changes alongside the independent variable and affects the dependent variable, making it unclear what caused the effect.

Question 10

Control measures

Answer 10

Techniques used in research to reduce or eliminate the influence of extraneous and confounding variables, ensuring that only the independent variable affects the dependent variable.