Unit 4 Presenting and Interpreting Data
Intent
The intention of this unit is to secure and build upon knowledge from Key Stage 2 and to introduce new concepts that lay the foundations of key concepts that will underpin units in Year 8 and Year 9 such as
Using a variety of graphs and diagrams to compare data
We want all students to become keen problem solvers and agile mathematical reasoners. This unit in particular develops these skills with
Choosing an appropriate average to use in any given situation
Implementation
For each strand in the unit students begin with lessons refreshing primary knowledge before new concepts are introduced. At the end of each strand there are revision and mastery lessons to consolidate and ensure all students have picked up on new ideas.
From the 3rd week of the unit students will complete a weekly knowledge check so they can measure how their knowledge and expertise is building before the test.
During this unit there will be two longer written homework tasks which include a skills check as well as problem solving questions. Students will have an opportunity to follow-up and improve their work.
Impact
The impact of this unit of work will be measured through a 45 minute written assessment. The assessment will feature questions similar to the skills check and homework tasks. The assessment will cover every aspect of the unit of work and using the knowledge organiser together with this website is a great way to prepare for the test.
Topics covered in this unit:
Core
28d Recognise the mode from a list of data or a bar chart
30d Calculate the range from a list of data or a bar chart
31d Calculate the median from an odd or even list of data
33d Compare data by referring to mode / median and range
38d Draw a stem and leaf diagram and use it to find mode, median or range
42d Calculate the mean from a list of data and compare which is the best average to use
60d Use averages to work out the values of missing data
52d Identify possible outliers from a list of data and omit them in calculating range
59d Calculate the mean, mode or median from a frequency table
41d Complete a grouped frequency tally chart
40d Distinguish between types of data: discrete, continuous and categorical
35d Draw and read from combined bar charts
47d Draw and read from stacked bar charts
36d Draw and read from a vertical line chart for discrete data
49d Draw and read from tables and line graphs for time series data
48d Read and interpret pie charts including working out fractions or totals for each category
58d Calculate the angles and draw a pie chart from data in a table
51d Draw a scatter graph, comment on correlation and use a line of best fit to make estimates
55d Draw up a frequency tree from a list of information and use it to solve problems
56d Draw up and use a two-way table from a list of information