Applied Mathematic Preliminary General 1 Types of Data

Applied Mathematic (Preliminary General 1) Types of Data Types of Graphs Stage 6 - Year 11 Press Ctrl-A ©G Dear 2010 – Not to be sold/Free to use 1

Different types of data are best displayed on certain types of Graphs. Types of Data Numerical Data that is Measureable Eg. Height, Weight, Speed. Categorical Data that is Not Measureable Eg. Colour, Objects, Categories. End of Slide 2

Types of Numerical Data Continuous Discrete Can be measured over a continuous range. Measured as exact values. Eg. Time, Temperature, Weight. Eg. Cricket Wickets per game, Shoe Size. End of Slide 3

Types of Categorical Data Nominal Data has sub-groups. Eg. Blonde, Brunette, Red Head. Ordinal Data is ordered. Eg. Short, Normal, Tall. End of Slide 4

Numerical Continuous Data. Line Graph Area Graph Radar Chart End of Slide 5

Numerical Discrete Data. Column Graph Bar Chart Cone Chart [also Cylinder And pyramid] Histogram End of Slide 6

Categorical Nominal Data. Pie Graph Column Graph Doughnut Graph 3 D Pie Graph End of Slide 7

Categorical Ordinal Data. Column Graph Bar Chart Cone Chart [also Cylinder And pyramid] End of Slide 8

Drawing a Pie Chart Industry 33% Transport 28% Commercial 18% Residential 21% Expand Button End of Slide 9

To find the angle, multiply percentage by 360 o Transport = 28% 0. 28 x 360 o Industry 33% Transport 28% ≈ 101 o Commercial = 18% 0. 18 x 360 o o 101 o o ≈ 65 119 65 o o o Commercial Residential = 21% 0. 21 x 360 76 18% o ≈ 76 Residential 21% Industrial = 33% 0. 33 x 360 o ≈ 119 o End of Slide 10

Drawing a Pie Chart There are 40 students in a class. 12 like football. Soccer 108 o 20 like cricket. The rest hate sports. 12 x 360 o Football = 40 = 108 o End of Slide 11

Drawing a Pie Chart There are 40 students in a class. 12 like football. Soccer Rest Soccer 108 o 162 o Cricket 18 like cricket. The rest hate sports. 18 x 360 o Cricket = 40 = 162 o End of Show 12