Khalil's further maths thread

[khalil]

I hope you guy's can help me with questions throughout the year

What is the best Further Maths textbook. My school is using Haese and Harris publications, dont know if thats good though.

When a question asks, 'comment on the distribution of the data', do we always mention outliners in addition to our response.

What is the best way to find the distribution of the data? In some stemplot's its not as clear cut as others.

In stemplot's do we always include the legend(key)?

[jackinthepatch]

Well we're using the Cambridge textbook. It's pretty decent I'd say, but I haven't seen any others to be honest lol.
Yeah we always mention the outliers.
Um...not too sure on the best way to find the distribution on a stem plot, but I'd reckon the SAC's and the exams will have stem plots that will be reasonably simple to read.
And I don't think there are legends on stem plots...did you mean something else, like segmented bar charts?

[khalil]

There are legends....eg. 2|3 means 2.3

Also. how do u work out the mean or mode on a CAS calculator, all books are suited to the older versions

[nerd]

You should probably write a legend because 2|3 could mean 2.3 or 23 depending on the situation. It should be obvious what the numbers are meant to represent depending on the set of data, but just to be sure I would add a legend. It doesn't take long and it's better safe than sorry.

[nerd]

Also, when commenting on a certain distribution, always mention the following things: shape (pos/neg skewed, symetrical), outliers, center (mean, mode, median) and spread (IQR, range) (an acronym to help you remember: SOCS). These are the 4 key ways in which you can describe a set a of data.

[khalil]

Ok thanks mate

[jackinthepatch]

Oh sorry I get what you mean by the legend on a stem plot now lol. 

[khalil]

Can anyone upload the section of their textbook about the 3 median regression line. My book, (haresse) does not explain it well!
thanks