The conclusion must be the ‘answer’ to the aim of the experiment.

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Presentation transcript:

The conclusion must be the ‘answer’ to the aim of the experiment.

If the aim is to find the relationship, the conclusion must state the relationship in a way that gives as much info about the relationship as possible.

The conclusion must be the ‘answer’ to the aim of the experiment. If the aim is to find the relationship, the conclusion must state the relationship in a way that gives as much info about the relationship as possible. Eg – a straight line graph between speed and time. ‘This graph shows that as time increases, so does speed’ and so on.

If a graph line is straight, the relationship can be described as linear

It can also be given as a mathematical equation

If a graph line is straight, the relationship can be described as linear It can also be given as a mathematical equation This can be written like this: Gradient + x-axis variable + intercept

If a graph line is straight, the relationship can be described as linear It can also be given as a mathematical equation This can be written like this: Gradient + x-axis variable + intercept If a graph goes through the origin (0 point) this means the linear relationship is proportional.

If a graph line is straight, the relationship can be described as linear It can also be given as a mathematical equation This can be written like this: Gradient + x-axis variable + intercept If a graph goes through the origin (0 point) this means the linear relationship is proportional. If it’s proportional, it means that if you double, triple one of the variables, the other will double, triple etc too.

What could we say about this graph? Let’s figure out the gradient…

We could say: -As time increases, the speed also increases.

We could say: -As time increases, the speed also increases. -There is a linear relationship between speed and time

We could say: -As time increases, the speed also increases. -There is a linear relationship between speed and time -This goes through the point of origin so the linear relationship is proportional.

We could say: -As time increases, the speed also increases. -There is a linear relationship between speed and time -This goes through the point of origin so the linear relationship is proportional. -The gradient is 8 so if x axis = time, and y axis = speed, then V = 8t