Maths Unit 3 0.0 / 5 ? MathematicsData HandlingGCSEEdexcel Created by: poppymanders12Created on: 16-02-18 23:47 What does a stem and leaf diagram do? It compares two sets of results, the left hand side is read backwards 1 of 10 What is a frequency polygon? A graph made by joining the midpoints of the tops of the bars in a bar chart with straight lines 2 of 10 What is the modal class? The group with the highest frequency in the graph 3 of 10 How do you estimate the mean from a grouped frequency table? Add the products of the midpoints and their frequency and then divide it by the total frequency 4 of 10 When is (n+1)/2 used? When trying to find the median and the total frequency is n 5 of 10 What does a scatter diagram tell? It says whether there is a link between two variables 6 of 10 What is a line of best fit? A line that passes as close as possible to the points on a scatter graph 7 of 10 What is interpolation? Using a line of best fit to predict data values within the range of data given 8 of 10 What is extrapolation? Using a line of best fit to predict data values outside the range of data given 9 of 10 What are outliers? Anomalies ( Points that don't match the pattern of the rest of the graph ) 10 of 10
Comments
No comments have yet been made