Revision Class

I plan to be at school in LA5 (normal maths classroom) from 1-3pm on Wednesday this week for those who would like to attend. I will have a couple of past exams for you to work through and will recap quadratics/functions and common question types.

Moving Averages

Moving average notes.
Make sure you know the centred moving average formula and origins of it!

Sequence Comments

For the test tomorrow make sure you can fill in gaps in a sequence
For example 2, ___, ___ 16, ... is a geometric sequence find the missing terms, then write the recursive rule.

(Note missing numbers are 4, 8 and recursive rule is T(n+1) = 2T(n); T(1) = 2)

The questions also include finance type contexts so make sure you know percentage increase type questions and be able to use general rules to describe them.

Good luck and see you all in the morning.

Normal distribution

Make sure you understand the concept of normal distribution and the 68%, 95%, 99.7% rule when balanced.
a good practice is to watch the video from http://www.classpad.com.au/

here are the class notes

Sampling Techniques

Here are the notes on sampling. You need to be able to describe how you you would choose a sample.

Good Luck in your exams

Good luck and Study hard for your exams. You are all capable of surprising yourselves in a good way IF you put the work in. Study the topics you know first and then work on the topics you don''t later. Please feel free to ask questions through the blog or e-mail me at the education one. I am planning to check the e-mails and blog each evening to respond to any queries.

Mrs H

Histograms

There is lots of information and activity sites to create histograms. You need to be able to read them and describe distributions and estimate central tendency for this course.

Here a silly and education activities to have a go at.

very silly activity

try to find a video that also shows interpreting histograms. So far I have only found how to draw them!

Box plots

Here are the notes from class on box plots
The skills you are required to have are
drawing plots
Comparing plots
Describing the effects of changes of information (cropping data etc)
Analysing box plots

Which boxplot is liklely to have a mean that is lower than its median? justify.

Counting Techniques

Here are the counting technique notes from last term.

Distribution Notes

Here are the board notes from today's lesson reminder that you may need to add to them.
Consider looking at standard deviation definitions and lessons on line and find one that works for you.

Key Questions to consider
What does standard deviation tell you?
What increases or decreases standard deviation?
What impact does multiplying scores by a common factor have on standard deviation?
What impact does adding (or subtracting) a number to all scores have on standard deviation?

Transformation question

Who can describe in the comments what transformations are required for this function given the orginal function is

Fully describe the transformations that occurred to the graph if

Function Transformation

here are the notes to function transformations.

Function

Functions are the next topic particularly the transformations (moving and dilating) of them. you need to explore in your next EPW the affects of a, b, c, and d on the function f(x).
f(x) could be linear, quadratic, exponential, cubic, reciprocal for 2CD but any function for 3AB.

a f b(x-c) + d

have a look at the youtube clip as a reminder of the idea behind transformations

Wk 2 reflections

Here are two weekly reflections from students on the trigonometry studied last week

I forgot how to do trig and unit circles but after a brief expanantion, it all came back to me. how do you find angles of a triangle using SOHCAHTOA on the calculator? I keep forgetting. Cosine rule was revision because of what the olf man taught me last year. Pythagoras is revision which is still needed in 3AB. I don't like indices. (NV)

A great portion of what we learnt this week has been more of revision, though some concepts such as the cosine rule that I may have previously learnt but not quite understood appear new to me and are starting to make more sense. I also learnt new techniques for trigonometry that have made me feel more confident.

good luck on the test next week