Bar Charts LO To be able to draw

Bar Charts LO: To be able to draw bar charts accurately

Bar Charts • Bar charts must have: – title – frequency on the y-axis – gaps between the bars – bars with equal widths – Labelled axes

Bar chart to show the number of types of tree in a park 10 Tree Frequency Oak 2 Birch 5 Evergreen 8 9 8 Pine 10 Cedar 7 Frequency 7 6 5 4 3 2 1 0 Oak Birch Evergreen Pine Type of tree Cedar

Task • Use the tables I have drawn on slide 5 and survey at least 10 people (family members or friends through social media) • Complete three tally charts with your information • Use the information to create a pictogram for ‘eye colour’ • Use a bar chart to show the information for the next two

Eye Colour Tally Frequency Blue Brown Green Favourite Season Tally Frequency Winter Spring Summer Autumn Hours watching TV a week 0– 4 5– 9 10 – 14 15 – 19 Over 20 Tally 1. Copy these tables into your books – one per page 2. Draw a pictogram for the eye colour table and a bar chart for the other tables Frequency

Draw a Frequency Table for this pictogram A pictogram showing the number of cars seen on Church Road Vauxhall Ford Toyota Renault Ferrari Each picture represents 4 cars

Comparative Bar Charts • We can compare two sets of data using bar charts • Place the bars for the two sets of data next to each other for each category • On the next slide is an example of a ‘comparative bar chart’

Example of a Bar chart to compare the eye colour of boys and girls in Year 9 10 9 Eye Colour Boys Girls Blue 9 7 Green 4 4 Brown 2 4 8 BOYS Frequency 7 GIRLS 6 5 4 3 2 1 0 Blue Green Eye Colour Brown

• Use the data on the average temperature in Rome and New York below to draw a comparative bar chart Rome Mean Average Monthly Temperature New York Mean Average Monthly Temperature 1 a) Which city has the highest mean monthly temperature? b) Which city has the lowest mean monthly temperature? c) How many months of the year is the temperature higher in New York than Rome? d) What is the difference in temperature between the two cities in June? e) In which city would you rather live? Explain why.

Draw a comparative bar chart to compare the number of Olympic gold medals Great Britain and Australia have won over the past 30 years. Olympic Games Gold Medals Munich 1972 Montreal 1976 Moscow 1980 Los Angeles 1984 Seoul 1988 Barcelona 1992 Atlanta 1996 Sydney 2000 Athens 2004 Beijing 2008 GREAT BRITAIN 4 3 5 5 1 11 9 19 Olympic Games Gold Medals Munich 1972 Montreal 1976 Moscow 1980 Los Angeles 1984 Seoul 1988 Barcelona 1992 Atlanta 1996 Sydney 2000 Athens 2004 Beijing 2008 AUSTRALIA 8 0 2 4 3 7 9 16 17 14