5 MEDIAN SMOOTHING (GRAPHICAL SMOOTHING)

[manutd]

Hi guys,
Im struggling to get my head around 5 median smoothing. what is the easiest way to do 5 median smoothing, and can i do it on my cas?

[VeryJuicyLemon]

Hi guys,
Im struggling to get my head around 5 median smoothing. what is the easiest way to do 5 median smoothing, and can i do it on my cas?

easiest way is just to look at the graph, then start from the 3rd x value and then figure the the median between (1st, 2nd, 3rd, 4th, 5th) plots.
so if the 5 numbers where (2,3,5,2,3) then the med will equal to: 3
that will determine the location of the y value.

so x=(3rd x value) and y=3...simply plot it on the graph

then repeat the process for 4th, 5th and 6th so on...

[manutd]

What if you're required to do the median smoothing on a graph, and the values on the y-axis aren't as easy to find ( eg. between 0.4 and 0.. what would you do in this situation, also it would be very much so if anyone can provide me with practice 5 median smoothing questions.

[VeryJuicyLemon]

What if you're required to do the median smoothing on a graph, and the values on the y-axis aren't as easy to find ( eg. between 0.4 and 0.. what would you do in this situation, also it would be very much so if anyone can provide me with practice 5 median smoothing questions.

Normally I will check if their is a frequency table or some sort of data that correlates to the graph, if not, your best bet is to use a ruler. 

Generally this sort of question are multiple choice, where you pick the closest options out of the 5...(vcaa won't expect students to find values like 0.4325...0.2342 by eye, unless a table is provided, otherwise it's to find the "closest" possible choice given)

[AngelWings]

Hi guys,
Im struggling to get my head around 5 median smoothing. what is the easiest way to do 5 median smoothing, and can i do it on my cas?

You've been given some good responses already by VeryJuicyLemon. Only addition I'd mention is: Once you pick a point, consider the two points on either side of it + the point you picked. e.g. If you pick the 6th point, consider the 4th, 5th, 6th, 7th, 8th. There are a number of questions that will only ask you to perform 3/5/7 median smoothing on one point in the graph, not the entire graph. In these cases, consider the medians of the y-values of 1, 2 or 3 points on either side respectively and the chosen point itself.

it would be very much so if anyone can provide me with practice 5 median smoothing questions.

Try NHT 2017 Exam 2 Core: Data module Q4. Otherwise practise exam questions from any company or VCAA will do. Unfortunately, due to copyrights, you'll have to go to those companies and purchase them (if they're not free) or ask your teacher for these. Alternatively, there's free April lectures from AN, which will include a Further session, so that's something you might be interested in.