In this graph, the gradient = (change in y-coordinate)/(change in x-coordinate) = (8-6)/(10-6) = 2/4 = 1/2 We can, of course, use this to find the equation of the line. Since the line crosses the y-axis when y = 3, the equation of this graph is y = ½x + 3 ....
The other axis will show the selling price of the car. This variable has the lowest value of850850850and highest value of2200.2200.2200.A sensible scale would be800800800to220022002200in steps of100.100.100.This will require drawing a break in the scale from the origin to800.800.800. 3Plot e...
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The lower quartile is (n+1)/4 th value (n is the cumulative frequency, i.e. 157 in this case) and the upper quartile is the 3(n+1)/4 the value. The difference between these two is the interquartile range (IQR). In the above example, the upper quartile is the 118.5th value an...
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