hello and welcome students to our next lesson in our as psychology course this is in fact the last part of section one and today we will be looking at different types of graphs the first graph that we're going to have to know for our as level psychology course is a bar chart and this is basically a chart which is used to show discrete data so we can see that on Long our x-axis we have our independent variable and then on our Y axis we have our dependent variable I should have labeled these but just for the purpose of Simplicity and just understanding what the chart really is I haven't but um we can clearly see here that the number of sort of pets varies so we have to know that the bars are of equal width and they are equal width apart and this is important to know because it differs from a histogram where the um our sort of bars aren't an uh well they are the same width they can differ depending on the histogram which you should come across but in as level psychology we should just come across histograms where all the bars are of the same width but instead squashed together and we have to remember that histograms are used to show continuous data and again we have the independent variable running across the xaxis and the dependent variable running along the y axis if you do not know the x-axis is the horizontal axis which runs along the bottom and the y axis is the axis which runs up and down vertically our last form of grph which we're going to have to know is a scatter graph and this is used to show correlational data so we can see that um we have just plotted on the results where they apply and then we can probably draw something we call a line of best fit which is a line that runs across all the points um which then shows sort of whether the correlation is positive which means it is going upwards from the left stretching up to the right as you can see from the graph on screen now or it can be negative where it is the complete opposite and instead the um sort of plots run from the top left hand corner down to the bottom right hand corner or there can be no correlation where the plots are scattered all along the graph meaning you know there's no valid conclusion we can take from this graph so here we have some questions I'd like you to attempt these by pausing the video and hiding your own notes once you've done so hit play and check out the answers okay so here are the answers if you did get all three of them correct uh well done I would advise you to move onto our next section which will be memory and next lesson we will be looking at the multistore memory model if you did not to get all of them right I would advise you just to go through the video once more and if you would like to you can just go through all the past um videos just all the questions if you check out the website there will be a mock test or there should be a mock test by the time this video is up about all of section one which is research methods and um you can go and take that test just to see how well you have progressed in the first section but next session is memory so I would advise you to move on to that if there are any other subjects which you wish to revise as well as as level psychology be sure to check out the channel and once you have done so you can find any of your subjects which you may be studying there and Revis for them as well preparing for your exams so until next time thank you for watching