27 February 2013

27 February, S2 - 11/M3*

Statistics

Title: Questionnaires and Sampling
Learning Objectives
Grade D
To be able to design questionnaires and surveys which allow us to answer a question.
Can you list the mistakes people commonly make when wording questionnaires? Why might they word questionnaire in this way on purpose?


Grade C
To demonstrate how to use and why we use simple sample methods.
What are the advantages and disadvantages of using sampling?

Grade B
To be able to demonstrate the use of stratified sampling.
We use a stratified sample to survey boys and girls in a school. We survey 24 boys and 36 girls, there are 1200 students in the school, how many are boys?

Resources 
Grade D









Grade C
Watch these two videos. Which is the most reliable survey? Can either survey be trusted? 





Grade B










Homework: 
MyMaths & Video Revsion


Higher


Title: Solving Linear Equations
Learning Objectives 

Grade D

To be able to demonstrate a method for solving linear equations with unknowns on both sides and/or brackets.

Can you explain how to simplify these equations so they only have one unknown?
 
Grade C
To be able to demonstrate how to change the subject of an formula. 
Why might we want to change the subject of an formula? Can you give a real life example?

Grade B
To be able to explain a method for solving two simultaneous linear equations.
What is the first thing you are looking to do when solving simultaneous equations?

Resources 
Homework
MyMaths Revision