Test scores II

Test scores II

Pencil and paper
Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
Further Resources
This task is about what happens to the mean if the data changes.

Hemi was proud of his test scores.
  

English 95
Mathematics 100
Social Studies 90
Science 89
Health 80
French 86
 
 
He added all his marks together and divided the total by 6 to find his average mark.
 
a)		  
What was Hemi's average mark? __________
 
b)		  
If Social Studies was not counted, what would the average mark be then? __________
 
c)
 
If Hemi was allowed to drop the marks from one subject so he could improve his average,
 
which subject should he drop? __________
 
Task administration: 
This task is completed with pencil and paper only.
Level:
4
Curriculum info: 
Maths, Statistics, Statistical investigations
Keywords: 
mean, data interpretation
Description of task: 
Students calculate the mean for a set of test scores and identify how changes in the data will effect the mean.
Curriculum Links: 
This resource can be used to help to identify students' understanding of the mean (average).
Learning Progression Frameworks
This resource can provide evidence of learning associated with
Statistical investigations, set 5
within the Mathematics Learning Progressions Frameworks.
Read more about the Learning Progressions Frameworks.
Answers/responses: 
 

Y8 (09/1996)
a) 90 very easy
b) 90 easy
c) Health easy