11. AQA A-level psychology set 11
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what is a histogram
display of continuous data using bars that touch.
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how do you create a histogram
group data into class intervals → label axes → draw touching bars.
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what is a scattergram
shows the relationship between two co-variables using plotted points.
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how do you create a scattergram
label axes → plot each pair of scores → draw a line of best fit if needed.
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tips for creating a scattergram
one dot represents one participant, no bars are used, and correlations can be positive, negative, or zero.
Note 
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