In this lesson, you will apprentice how to use accession and accession to complete tables and abundance diagrams.
This assignment includes:
a acquirements summary
one activity
Created in affiliation with Beyond.
You can appearance the abundance of article in a array of tables and charts. Abundance is the cardinal of times article occurs.
Sometimes you won’t accept all the data, but you can use accession and accession to assignment out the missing values.
This assignment will cover:
A account blueprint uses marks to represent frequencies. These marks are ‘bunched’ in fives to accomplish them visually easier to count.
Each | represents one.
卌 represents five. There are four vertical marks and one mark arresting through them.
For example:
Matilda is allocation her old toys into categories to accord away. She annal the cardinal of toys in a account chart. Attending at the account blueprint below.
A bar blueprint uses the acme of the confined to represent the frequency.
The bar blueprint beneath gives advice about the favourite brand of books apprehend by accouchement in a class. Use the bar blueprint to ample in the missing frequencies in the table.
The bar blueprint shows that 10 acceptance like sci-fi and 8 acceptance like added genres.
There isn’t a bar for chance books, so we accept to account the absolute of all the added genres and decrease this bulk from 30.
7 10 8 = 25 30 – 25 = 5
So, 5 acceptance like chance books.
Look at the complete abundance table and bar blueprint below.
A pictogram uses an figure or account to represent a frequency.
For example: A accumulation of schools authority a football tournament. The absolute cardinal of goals denticulate in the antagonism are represented in the pictogram.
4 goals denticulate
³⁄₄ – 3 goals denticulate
²⁄₄ – 2 goals denticulate
¼ – 1 ambition denticulate
A two-way table shows abstracts for two variables. The rows represent one class and the columns represent a altered category.
For example:
The two-way table beneath shows the buying of bicycles for acceptance in Year 7 and Year 8. Some of the ethics are missing. You can use accession to assignment out what they are.
To account a total, add the abstracts in the cavalcade or row.
To account the missing abstracts back accustomed the total, decrease the added allotment of accordant abstracts from the total.
Have a attending at the completed two-way table below.
In a pie chart, the admeasurement of anniversary area is proportional to its frequency.
For example: Year 7 were asked to accept their favourite television genre. You can assemble a pie blueprint out of this information.
First, acquisition any missing frequencies.
Frequency for films: 90 – (40 15 20) = 15
So, 15 acceptance adopted films.
Now, you will charge to account the angles to be able to assemble the pie chart.
There are 360 degrees in a circle, so you charge to bisect 360 by the absolute abundance to account the admeasurement of the bend for one allotment or person.
360 ÷ 90 = 4°
Multiply anniversary abundance by 4° to account the bend for anniversary area of the pie chart.
Films: 15 × 4° = 60°
It’s acceptable convenance to add up all your angles and analysis they according 360°.
You can use the advice in the completed table beneath to draw the pie chart.
Worksheet: Completing tables and abundance diagrams
Have a go at this worksheet from Beyond. It covers the abundance tables and diagrams covered in this lesson.
You can book it out, or address your answers on a allotment of paper.
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