Whānau ages

Whānau ages

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Working with Students
Further Resources
This task is about reading information from a stem-and-leaf graph.

Here is a stem-and-leaf graph showing the ages of Kiri's whānau.

 

Ages

 

Look at the graph and answer the questions.

a) What age is the youngest person? __________ years old
 
b) What age is the oldest person? __________ years old
 
c) How many people are 44 years old? __________
 
d)
Circle how many people there were altogether: 
 
  (A)   4
(B)   10
(C)   12
(D)   16
(E)   48
Task administration: 
This task is completed with pencil and paper only.
Level:
2
Curriculum info: 
Maths, Statistics, Statistical investigations
Keywords: 
stem-and-leaf graphs, graph interpretation
Description of task: 
Students answer questions about a stem-and-leaf graph which shows the ages of people gathered in a house one Christmas.
Curriculum Links: 
This resource can be used to help to identify students' ability to interpret a stem-and-leaf graph.
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Statistical investigations, set 3
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y4 (07/1999)
a) 13 moderate
b) 48 easy
c) 2 moderate
d) C easy
Diagnostic and formative information: 
  Common error Likely reason
a)
b)
c)		 0
9
0		 Reads the leaves as if they are data rather than combining the stem with the leaf to get the data.