Forecasting & Predicting Data

[petewillis99]

Dear All,

First of all sorry if this has been answered somewhere else also I am a newbie so sorry if I'm wasting your time.

I'm currently analysing data for my School. I have two questions:


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[TD="colspan: 10"]Art[/TD]
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[TD="align: right"]2013[/TD]
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[TD]Grades +2[/TD]
[TD="align: right"]10%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
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[TD]Year[/TD]
[TD]Equal[/TD]
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[TD]Grades +1[/TD]
[TD="align: right"]45%[/TD]
[TD="align: right"]13%[/TD]
[TD="align: right"]13%[/TD]
[TD="align: right"]25%[/TD]
[TD="align: right"]0%[/TD]
[TD][/TD]
[TD][/TD]
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[TD="align: right"]2013[/TD]
[TD="align: right"]35,00%[/TD]
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[TD]Equal[/TD]
[TD="align: right"]35%[/TD]
[TD="align: right"]87%[/TD]
[TD="align: right"]50%[/TD]
[TD="align: right"]42%[/TD]
[TD="align: right"]69%[/TD]
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[TD="align: right"]2014[/TD]
[TD="align: right"]87,00%[/TD]
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[/TR]
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[TD]Grades -1[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]38%[/TD]
[TD="align: right"]33%[/TD]
[TD="align: right"]31%[/TD]
[TD][/TD]
[TD][/TD]
[TD][/TD]
[TD="align: right"]2015[/TD]
[TD="align: right"]50,00%[/TD]
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[/TR]
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[TD]Grades -2[/TD]
[TD="align: right"]10%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
[TD="align: right"]0%[/TD]
[TD][/TD]
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[TD="align: right"]2016[/TD]
[TD="align: right"]42,00%[/TD]
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[TD="align: right"]2017[/TD]
[TD="align: right"]69,00%[/TD]
[TD]Equation[/TD]
[TD]Forecast[/TD]
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[TD="align: right"]2018[/TD]
[TD][/TD]
[TD="align: right"]63,50%[/TD]
[TD="align: right"]63,50%[/TD]
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[TD="align: right"]2019[/TD]
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[TD="align: right"]65,80%[/TD]
[TD="align: right"]40,30%[/TD]
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[TD="align: right"]2020[/TD]
[TD][/TD]
[TD="align: right"]68,10%[/TD]
[TD="align: right"]91,67%[/TD]
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1) Is is possible to use forecasting formula on more than one set of data but view it all in one graph (whether that is as a number or %).



2) Am I ok using Forecast Formula, or should I look for a non linear forecasting / predictions formula. If so which one?

Thank you in advance for any help & advice given.

Pete

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