# How to create a bell curve / normal distribution graph

## How to create a bell curve / normal distribution graph

I am having hard time to create the bell curve. I have sorted the data (please see the attached file) according to the distribution (only the green marked data) and I believe I will have to use different formulas to create the column graph and the curve.

I would appreciate it a lot if someone could take a look at this an advise, how to do it. I have already spend couple of hours researching how to do this but it seems to be quiet complex. Is there an easy way to create that type of chart?

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I am looking to draw the following graph in my attachment (please see attached PDF).

I tried converting them into histogram and then into a bell curve, but couldn't get it to work,

because I don't understand terms such as "bin range". Can someone enlighten me on whether I need to convert the data into a histogram first then into a separate bell curve? If so, could someone show me how I should do it? Many thanks

PS - I understand that the graph I am looking for should be a normal distribution (I'm guessing it's not a standard normal distribution graph as the graph I am looking for is not one with 0 in the middle). Please kindly advise me.

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I think its too early in the morning or I have just worn my brain out with information over the last 2 weeks!

Anyway, I figured I would differ this one to the group for a simple solution!

I want to simulate a bell curve with random numbers for test data, so I need a formula to return a large percentage of numbers around a mid point and get less and less to the outside, with a very marginal amount of really wild outside points!

=LOOKUP(RAND(),{0.05,0.15,0.5,0.85,0.95},{0.03,0.02,0.01,0.01,0.02,0.03})*RAND()+MIDPOINT-RANGE

was where I was looking

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