Trying to draw a Bell Curve/Normal Distribution curve with the data set provided, but it is not getting created on Excel. Can anyone help me in creating the same.
https://docs.google.com/spreadsheets/d/1ipDo6WlbmDUBZuuS4ya3ZGD7mkP_vnbByK3KvyLbJ88/edit?usp=sharing
The above file can be used as the data set for creating the curve. Can someone explain me the procedure of how to make a curve with the above data set in Excel?
if your data is normally distributed it should resemble a bell curve.
By "Trying to draw a Bell Curve/Normal Distribution curve", are you referring to a line diagram?
Remember, the bell curve is a histogram of your data. If you inserted a histogram of your data, would that be enough?
If not, what you could do is calculate the standard deviation of your data (and the mean), then you could make a column for different standard deviations and what value we expect it to be.
We could then incorporate that into your old histogram. You could use a "Combo" chart and plot the histogram on one axis and the a line for your calculated values (you can make it smooth if you think it's too sharp. Also, you could decrease the distance between each of your calculated values (1.1, 1.2, ...) instead of let's say halves of standard deviations.
Unfortunately, the data you provided is not at all normally distributed.
So you can't create a bell curve based on this data, no.
Related
I currently have a data set of x and y coordinates (position of an animal in an arena) over a period of time. I just used the coordinates to plot a scatter plot of what that looks like. However, instead of having every single coordinate as a separate point, i was wondering if there was a way to create a heat map of the points? So, the higher the likelihood of the animal in a specific area/ similar coordinates, the warmer the color? Hoping for the final product to be a depiction of the arena with a gradient of colors based on the likelihood the animal explores those regions?
Well with that many points, I don't know if Excel is the right choice if wanting to color-coordinate. The site https://app.rawgraphs.io/ has some really cool graphing capabilities. I use this when needing sankey's or something unusual that Excel cannot easily handle.
Here I used 1500 x/y points between 0 and 20. Then I selected the graph type called "Contour Plot".
Would this work?
Or here's a Hexagonal Binning chart of the same data...
Is there a function within Excel to Interpolate while taking into account a logarithmic prediction?
At the moment I am using linear interpolation but would like to find a better way to fill in the blanks if possible.
There's no logarithmic regression or interpolation in Excel, even in the Anlaysis ToolPak. You'll need much more advanced software for that, such as MatLab.
If you're stuck working in Excel... here's a possible mathematical solution:
Rather than working with the raw data x and y, instead try plotting x and a^y, where a is the base. (Or plotting log(x,a) against y.) If you have the correct base a (and there's no vertical offset), you will then have a linear relationship from which you can perform a linear interpolation as normal, then convert the interpolated values back to actual values by taking the log of them.
If you don't know what a is, then you can instead calculate a line of best fit for an arbitrary a, calculate the standard residuals, and then use Problem Solver to modify a until you get the lowest possible standard residuals, at which point you have the best estimate of a.
Similarly if there is a vertical offset b, you'll need to test some variables there that also result in a linear relationship. Plot x against a^(y-b)
I'd like to plot mean and standard deviation of multiple measures in one Gnuplot, if possible.
For example, object A and B has measures of lengths and weights like this (CSV format):
length,weight
100.0,0.1
100.5,0.12
98.8,0.09
100.1,0.11
Is it possible to plot this in a single figure with good visibility, i.e., the length is at the magnitude of 100, while the weight is at 0.1? I don't want the logarithmic way because in my real data, it doesn't make sense to logarithmize them.
Yerrorlines seems an option, but can histogram do this too?
Anyone knows how to do so in Gnuplot?
Thanks!
Most simple thing to do on paper, but somehow near impossible to work out in Excel.
I need to interpolate off a standard curve in Excel.
I have a standard curve and need to find an unknown concentration of a known absorbance.
Just like this;
http://class.fst.ohio-state.edu/fst601/Lectures/spectt/Image161.gif
My lecturer would not give us any more hints than to either use the, linear regression equation (which i think i worked out but couldn't get it to calculate the concentration) or use the point finding/picking option (no idea what this could mean)
If anyone could help me out with this I would really appreciate it, and so would my whole class!
In excel, you can do it two ways:
Method 1: Use a standard interpolation/extrapolation formula. (Bingle)
Method 2: Plot any existing data points that you have as an x-y(scatter) plot. Right-click on the data line in the chart and choose 'Add trendline'. Excel will calculate a best-fit line for your data (using linear regression) and display the line over the top of your existing data. If you right-click on this trendline, you can adjust its settings and display properties of it, including the equation used to draw it. Once you have that equation, you can plug in any value of x and get the corresponding value of y.
I didn't know what stack exchange site to put this on, so I put it here. I am trying to determine if there is a correlation between the size of a school and the major that the school specializes in.
In order to do this, I programatically collected and analyzed data. In order to make my report, I need to make a few graphs in excel, but I have no clue how to do this.
What I'm looking for is a scatter plot, with quantitative values on the Y-Axis (the school size) and qualitative values on the X-Axis, I would like there to be every major listed out (kinda like a bar graph). From there, I want to plot a point above the major that a school specializes in; and have that point be as high as its student size.
Any help?
Edit:
Here is my sample data set. I want it to have categories that are to the right of the data, and points on the graph that correspond.
When you say "correlation" between X and Y, I think regression.
I would recommend doing an X-Y scatter plot and asking Excel to add a trend line. Not only will you get a least squares fit for the "best" line for your data, you'll get the correlation coefficient that tells you whether or not there's a relationship. The correlation coefficient ranges from -1 to +1; the closer your correlation coefficient is to 1.0, the better the relationship.