HOTSHOTS4
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I have to do my evaluation soon for my statistics coursework and I am really confused on what to do for it and how to lay it out

I will be very grateful for any help on this issue
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constellarknight
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If you give me a link to the relevant specification for whatever qualification you're doing, I can take a look.

(Original post by HOTSHOTS4)
I have to do my evaluation soon for my statistics coursework and I am really confused on what to do for it and how to lay it out

I will be very grateful for any help on this issue
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HOTSHOTS4
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I am doing AQA Statistics
I am not sure what sort of specification but I think it is this one
http://filestore.aqa.org.uk/subjects...10-W-SP-14.PDF
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HOTSHOTS4
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I am doing GCSE statistics
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constellarknight
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(Original post by HOTSHOTS4)
I am doing GCSE statistics
I can't seem to find anything on Evaluation in the specification. But just taking a guess, I would say you should discuss what was good about your statistical methods and what could be improved to make the conclusions more accurate or reliable.
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HOTSHOTS4
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thank you
also, I have 12 box plots so I how would compare the to each other - I was told to include my box plots in my evaluation
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constellarknight
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(Original post by HOTSHOTS4)
thank you
also, I have 12 box plots so I how would compare the to each other - I was told to include my box plots in my evaluation
Are they box plots of different data sets? You need to be a bit more specific.
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HOTSHOTS4
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yes
each one contains prices of holidays from different companies
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constellarknight
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(Original post by HOTSHOTS4)
yes
each one contains prices of holidays from different companies
And was the task to compare which company was cheapest on average, or had the smallest range of prices, or something like that?
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HOTSHOTS4
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I am sorry
I should have explained more clearly
I have 12 box plots all together - 6 for summer and 6 for winter
my hypothesis is prices for adults going to Miami from Birmingham will be cheaper in summer than in winter
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constellarknight
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(Original post by HOTSHOTS4)
I am sorry
I should have explained more clearly
I have 12 box plots all together - 6 for summer and 6 for winter
my hypothesis is prices for adults going to Miami from Birmingham will be cheaper in summer than in winter
If you found box plots a particularly useful statistical diagram for assessing the hypothesis, then include them and say this. Also give a reason, e.g. "they make the medians easy to compare side by side".
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HOTSHOTS4
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thank you for help
my last question is that what does the spearman's rank coefficient show you on a scatter graph when comparing Summer prices with Winter prices??
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constellarknight
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(Original post by HOTSHOTS4)
thank you for help
my last question is that what does the spearman's rank coefficient show you on a scatter graph when comparing Summer prices with Winter prices??
The coefficient reflects how good the correlation is between those two sets of data.
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HOTSHOTS4
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So if there was a weak strong correlation between the prices of summer and winter would that mean that when the prices of summer increase so would the price of winter??

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constellarknight
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(Original post by HOTSHOTS4)
So if there was a weak strong correlation between the prices of summer and winter would that mean that when the prices of summer increase so would the price of winter??

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A correlation can't be weak and strong at the same time! But a moderate or strong correlation means essentially what you said, yes. Actually the Spearman coefficient tells you if the datasets are monotonically related, which means that for all points where the x value is greater than a certain number, the y values are greater than the x value for that certain point.
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HOTSHOTS4
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#16
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Thank you soo much for your help
I seriously needed it
😊😊😊😊😊

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