S3_3_Charts_Tables_Charts

S3_3_Charts_Tables_Charts - www.mathsrevision.com S3.3...

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Unformatted text preview: www.mathsrevision.com S3.3 Tables & Charts Tables & Charts Feb 13, 2012 Feb 13, 2012 Created by Mr. Lafferty@mathsrevision.com Created by Mr. Lafferty@mathsrevision.com Frequency Tables / Relative Frequency Five Figure Summaries Cumulative Frequency Table Stem-leaf Diagrams Back to Back Stem Leafs Scatter Diagrams Box Plots www.mathsrevision.com S3.3 Starter Questions Starter Questions Feb 13, 2012 Feb 13, 2012 Created by Mr. Lafferty@mathsrevision.com Created by Mr. Lafferty@mathsrevision.com Q1. Does 5x 2 16x + 3 factorise to (5x - 1)(x 3) Q2. Change into s 75 exchange rate 1 1.5 Q3. Convert to scientific notation 0.0675 www.mathsrevision.com S3.3 13 Feb 2012 13 Feb 2012 Created by Mr. Lafferty Created by Mr. Lafferty 3 3 Aims of the Lesson 1. Understand the term Frequency Table and Relative Frequency . 2. Construct a Frequency/Relative Frequency Table. 3. Interpret information from Tables. 13 Feb 2012 4 Raw data can often appear untidy and difficult to understand. Organising such data into frequency tables can make it much easier to make sense of (interpret) the data. Frequency tables Data Tally Frequency Sum of Tally is the Frequency llll represents a tally of 5 13 Feb 2012 Created by Mr. Lafferty 5 Example 1 . A tomato grower ideally wants his tomatoes to have diameters of 60mm, but a diameter ranging from 58mm to 62mm will be acceptable. Organise the diameters given below into a frequency table. 58 59 58 56 62 56 57 60 61 59 59 57 60 60 56 59 58 58 59 56 61 60 56 58 58 62 59 58 60 61 59 62 57 59 60 56 61 60 62 58 61 62 60 59 56 58 62 62 Frequency tables Lowest number 56 Highest number 62 13 Feb 2012 Created by Mr. Lafferty 6 Diameter Tally Frequency 56 57 58 59 60 61 62 l l l l l l Frequency tables 58 60 58 56 59 59 57 60 61 59 59 57 60 60 56 59 58 58 59 56 61 60 57 58 58 62 59 58 60 61 59 62 57 59 60 59 61 59 62 58 61 59 60 59 60 58 60 62 X X X X X X 13 Feb 2012 Created by Mr. Lafferty 7 Diameter Tally Frequency 56 57 58 59 60 61 62 Total Frequency Tables 3 4 9 13 5 10 4 lll llll llll llll llll llll llll llll lll llll llll 58 60 58 56 59 59 57 60 61 59 59 57 60 60 56 59 58 58 59 56 61 60 57 58 58 62 59 58 60 61 59 62 57 59 60 59 61 59 62 58 61 59 60 59 60 58 60 62 X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X Relative Frequency R48 3 48 = 0.0625 4 48 = 0.0833 9 48 = 0.1875 13 48 = 0.2708 10 48 = 0.2083 5 48 = 0.1042 4 48 = 0.0833 Relative Frequency always adds up to 1 Relative Frequency used with Pie charts www.mathsrevision.com S3.3 13 Feb 2012 13 Feb 2012 Created by Mr. Lafferty@mathsrevision.com Created by Mr. Lafferty@mathsrevision.com Now try Ex 3.1 Q2 Ch6 MIA (page 108) Charts & Tables Charts & Tables www.mathsrevision.comwww....
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S3_3_Charts_Tables_Charts - www.mathsrevision.com S3.3...

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