The average value of all scores. It is the most suitable measure of central tendency for interval or ratio data. It is the most accurate measure for all data however, it can be distorted by extreme freak values
The value or event that occurs most frequently. It is the most suitable measure of central tendency for nominal data. It is not influenced by anomylous results and is useful to show the most popular value
The middle value when all scores are placed in rank order. It is the most suitable measure of central tendency for ordinal data. It is not distorted by extreme freak value but can be distorted by small samples and is less sensitive
7. What is reliability?
Reliability refers to the consistency of the method of measurement and can be tested through replicating the experiment
Reliability refers to how true to life the experiment is
8. What is an advantage of a lab experiment?
Can establish a relatioship between the varaibles
High control therefore easily replicated
No chance of demand characteristics
Very in depth and detailed
9. What is the aim of an experiment?
What the researcher aims to investigate
What the researcher predicts will happen
10. What is a confounding variable?
A variable which interferes with the independent variable and therefore has an unintentional effect on the dependent variable thus making it unclear whether the independent variable or the confounding variable is causing the dependent variable to change
A variable which interferes with the dependent variable and therefore has an unexpected effect in the independent variable making it unclear whether the dependent variable or the confounding variable that is cauding the independent variable to change
