Descriptive Statistics Notes - AS OCR Psychology Unit 1

Basic revision notes broken down into small managable chunks!! Hope this helps!! Good Luck! <3

HideShow resource information
  • Created by: Joanna
  • Created on: 12-01-13 19:31
Preview of Descriptive Statistics Notes - AS OCR Psychology Unit 1

First 170 words of the document:

Psychology Notes ­ Descriptive Statistics
They are used to describe and summarise data and to check significance of results obtained.
Mean ­ Adding up all values then dividing by the number of values ­ Not suitable for nominal
Median ­ The middle value after the list of values has been ordered in ascending order ­ not
suitable for nominal data*
Mode ­ the most common value in a data set ­ suitable for all data*
Bar Charts ­ The height of the bar represents frequency
Pie Charts/Pictograms ­ To illustrate the frequency of data
Scattergraphs ­ Stable visually analyse correlation data
Types of Data
Nominal ­ When data is split into different categories e.g. scores on a chemistry and a biology
test cannot be combined
Ordinal ­ When data is organized in some way e.g. in order of someone's favourite colours
Interval ­ When data is measured using units with equal intervals e.g. scores on a test


No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all resources »