Research Methods

This type of sampling gives every P an equal chance of being picked

• Random

• Opportunity

• Equal

• Systematic

This is an example of a one tailed hypothesis

• There will be a difference between aggression levels of males and females

• Anxiety affects exam performance

• Reading fiction will give you a higher grade in English than reading fact books

• There will be no difference in happiness scores between people over 50 and people under 50.

One problem with surveys is that

• people don't get the chance to elaborate on their answers

• People may lie

• People rarely take them seriously

• All of these

An example of a closed question is

• What is your opinion on obesity?

• Dogs are better than cats. Agree/ Disagree

• Dogs are better than cats

• Describe the last time you felt happy

Standard deviation is

• A measure of dispersion

• A measure of central tendency

• A type of mean

• A type of pattern you see on a graph

The mode is

• The total divided by the number

• The middle number

• The difference between the highest and lowest

• The most often

The independent variable is

• The variable that you measure

• The variable that you control

• The variable you think will change

• The variable that is changed/ manipulated

A high standard deviation shows

• The scores are clustered around the mean

• that scores are very different to the mean

• the data hasn't been collected correctly

• The mean is too low

n in a mathematical equation means

• number of hypotheses

• mean

• total number

• number of data

A problem with quantitative data is

• It takes a long time to analyse

• It can be a lie

• It isn't very detailed

• It can be calculated wrongly