Graphs 0.0 / 5 ? SciencePaper 2IGCSEAQA Created by: Lotto65Created on: 14-06-16 18:44 When do you use a bar graph? If you have a categoric independent variable and a continuous dependent variable 1 of 16 When do you use a line graph? If both variables are continuous data 2 of 16 What is discrete data? Data that can be arranged into categories e.g. eye colour 3 of 16 What is continuous data? Consists of numerical values 4 of 16 Cent.... is how much of something? 100 lots of 5 of 16 Kilo... is how much of something? 1000 lots of 6 of 16 Mega... is how much of something? 1,000,000 7 of 16 What must you do when drawing a graph? Circle anomalies, draw line/ curve of best fit 8 of 16 A graph shows a straight line that goes through the origin. What does this say about the variables? They are directly proportional 9 of 16 What does it mean if something is directly proportional? As x increases, y increases 10 of 16 A graph shows a straight line that does not go through the origin. What does it show about the variables? There is a linear relationship 11 of 16 A graph curves downwards and then along the x axis. What does this say about the variables? Inversely proportional 12 of 16 What is a non-linear relationship? Not a straight line and not inversely proportional 13 of 16 What word must you NEVER say in science in particular? Correlation 14 of 16 How do you work out the gradient of a curve? Draw a tangent and calculate the gradient of the tangent 15 of 16 If you have a curved velocity-time graph, how do you work out the distance? Count the squares 16 of 16
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