worksheet and assessment card masters - National STEM Centre

Suppose you have collected some data and want to
present it in a way that is easy to understand. For
example, you have carried out a survey on how much
people spend, on average, every year on clothes and
textile items. Below are some results for a family with
two children.
Textile items Average annual expenditure
per household
Men's clothes £90
Women's clothes £180
Children's clothes £180
Household textiles £90
You could show this by any of the three ways shown
on this worksheet.
Pie chart
100
a
women
children
In the pie chart, the total is represented by a complete
circle (the pie) and each item by a sector (or slice of
the pie). The angle of the sector is in proportion to theamount
spent.
For example, in the pie chart below, the spending by
men is represented by 60° of the circle. This is worked
out as follows: men spend one-sixth of the total
(90 -;.540), one-sixth of the complete circle (360°)
is 60°.
Now consider the household textiles used in your own
home. Carry out a survey to find what proportion of
the total is spent on:
a carpets
b curtains and furnishing fabrics
c bedding
d towels and cleaning cloths.
Choose one or more of the methods shown below to
represent your data. (You may find it useful to look in
local shops or catalogues for the current prices of
these items.)
Pictogram
men 10~~~§JIio
women
~Ci8~~§J
t §~ fell§J e2J
~~~[8§J§J
children It
Bar chart ~eJI§JB
CIl
200
E:0 women children
c:
CIl
~ xw~
household P=9[g ~:l§~]~ f§