Related GCSE Gary's (and other) Car Sales essays

1. 

   Used Cards - find which factors will influence the price of a second hand ...

   Below are the scatter graphs which I generated from the sets of data, showing the relationship between the price when old and the mileage with both, Mercedes and Ford. It is evident from the above graph that the data I had collected and had then changed, due to the anomalous

2. 

   maths=Data Handling Coursework

   how I will be doing this is by adding al the prices say for example of the Mercedes and then diving it by fifteen and that would get me the mean, I will repeat it for the other columns and for each car, this is important because we are finding

1. 

   Maths Coursework:Used Cars

   So 1000.25*3 = 3000.75 Rover Median: The equation to find the median is (N+1)/2 (2000+1)/2=1000.5 So the median value is 1000.5 Lower Quartile: this is found by calculating N+1 then dividing it by 4. So 1501/4 = 500.25 Upper Quartile: this is found by multiplying the lower quartile by 3.

2. 

   T-Total Maths

   I have the formula above for each of the grid that l am investigating. The only difference in the formula is that instead - (negative) which l got from the first T Shape. Know l have got a + (positive)

1. 

   used car coursework

   There are some anonymous results. This is due to some cars which didn't depreciate as much as expected. For example, the 8 year old car had a higher price then cars that ranged between 3-7 years old. This is an odd result so I searched what caused this result.

2. 

   Used second hand cars

   d� n(n�-1) = _ 6*4284.20 30 (900- 1) = _25704 26970 = 1- 0.953058956 = 0.046941045 = 0.05 (2 d.p) You can compare two sets of ranking using Spearman's coefficient of rank correlation. You use the formula ?= _ 6? d� n (n�-1) d is the difference between the two rankings of one item of data.

1. 

   Maths Coursework - Used Cars

   Therefore, to retain the fairness throughout the experiment, I will use stratified sampling as a fair method. This is because stratified sample takes into account the make of the cars and the frequency, and also keeps the investigation thoroughly fair.

2. 

   Factors affecting price of Used Car

   In comparison to the rest of the cars, this This tells us that the gradient is higher, 6359.4. This graph's equation line tells us that it's Also tells us that its engine size is worth much more the steepest of all with a gradient of the one for ford. 15232.