Visual Presentation Of Data

Question 1

Bar-charts

Answer 1

• display categories of data like mean, median, and mode
• one bar for each category- represents discrete data
• axis must be appropriately labelled- clear what data and values are represented

Question 2

Frequency tables

Answer 2

• displaying the number of times pieces of data occur
• can be created via a tally chart
• continuous data- no gaps between categories being analysed

Question 3

Histograms

Answer 3

• displaying the frequency that data occurs in a data set
• area of each bar indicates the frequency the data occurs
• continuous data- no gaps between categories being analysed
• to calculate frequency: multiply the width by the height of the bar