# Maths Statistc Coursework!!Watch

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15 years ago
#1
I have to come up with a plan and specify the problem of my project but i don't understand it.
The question is gary sells used cars, he has 36 cars for sale. i have the sheet of infomation with it but then it says:
In your in vestigation you might chose to look at any of the following:-
-the prices of the cars
-the ages of the cars
-the makes of the cars
-the cost when new of the cars
-the mileages of the cars
-the engine sizes of the cars
compare the pricesof the used cars with the other pieces of information given in the table.

But i don't know what to write for my SPP!!

Plz Help!!
Alex
15 years ago
#2
(Original post by Unregistered)
I have to come up with a plan and specify the problem of my project but i don't understand it.
The question is gary sells used cars, he has 36 cars for sale. i have the sheet of infomation with it but then it says:
In your in vestigation you might chose to look at any of the following:-
-the prices of the cars
-the ages of the cars
-the makes of the cars
-the cost when new of the cars
-the mileages of the cars
-the engine sizes of the cars
compare the pricesof the used cars with the other pieces of information given in the table.

But i don't know what to write for my SPP!!

Plz Help!!
Alex
Assuming this is GCSE Statistics courework...

Essentially what we are looking for is correlation (or not) between Prices of Cars vs (whatever piece of other data).

So make up a few hypotheses,
eg The older the car, the lower the price.
The larger the engine, the higher the price.

Make a prediction, and tell us why this should be the case

Then, plot the data on a scatter graph, and make a comment - this is called a qualalative analysis.

At GCSE Statistics you should have been taught Spearmans Coefficient of Rank Correlation, if you can perform this analysis you will get a number at the end of it, which you can analyse - this is quantatative and such a value is more respected in statistical analysis.

If you require the formula for the Spearman Rank Correlation Coefficient is it shown as formula 1, just here
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