0
votes
0answers
19 views

A simple plot of a list in R

This is a very easy question, I guess. But unfortunately I struggle to solve it in an easy way: I have a list in R. I would like to plot the entries of each column vertically and label the x-axis to ...
1
vote
1answer
8 views

Histogram of three uneven datasets

I have three data sets consisting of times (hours) when something happened. The data sets have 2005, 826, 276 events respectively, so they're quite disproportionate. What I wanted to do was show how ...
1
vote
0answers
30 views

Plot histogram and density function

I need to plot a histogram for the data: ...
1
vote
0answers
32 views

How to find change points in a graph on matlab

I have a graph like this I need to find points at which sudden changes happening for the DPC Time Curve. We can observe that at time 20 and around 70 increase is happening. How to do this in Matlab. ...
0
votes
2answers
116 views

Curve Fitting a Cyclical Pattern of Data

I'm analyzing phonological characteristics of the 22 letters used in the Hebrew alphabet, and assigned each letter an enumeration to see if they are organized based on place of articulation: ...
0
votes
2answers
314 views

How to find (and plot) a probability distribution function?

I'm working on my biometrics course, and I have to plot a pdf (I think it means probability density / distribution function). Here is a sample pdf graph : Introduction to Biometrics page 5 , figure ...
4
votes
2answers
52 views

find a function such that it is symmetric across $y=1-x$ passing through $(0,0)$ and $(1,1)$, (not homework)

I am attempting to characterize a specific type of function. The function would be such that it is symmetric across the line $y=1-x$ This function would be a mapping $f:[0,1]\rightarrow [0,1]$ such ...
0
votes
0answers
34 views

$\exp(1i * 2 * \pi * (1:K) / K)$ to create clockwise format.

I was reading the documentation of R about text. here in the example : ...
0
votes
1answer
80 views

Need suggestions to fit unknown functions

I've generated these curves from a set of data and would like to fit them to come up with a model for a program I'm writing. Can anyone suggest functions that might approximate my curves? I'm a ...
-3
votes
2answers
108 views

Guess the functional form of a graph

Can you guess the functional form of the following curve y is 0 at x= Infinite ; y is very small ( +ve near to zero) at x=0 Thanks and regards
0
votes
1answer
48 views

Truncating a Time-Series Graph

I'm looking for a way to truncate outliers in a time-series graph. Some context: I'm plotting two different metrics on a single graph. It's important to understand what portion of "Metric A" takes ...
1
vote
2answers
75 views

Why does a linear line on a logscale vs. logscale plot imply an exponential relashionship?

I've seen this type of plot many times in the context of exponential relationships (e.g., Bak's sandhill). If I increase the variable on the x-axis tenfold, and I get back a tenfold increase in y, ...
1
vote
1answer
42 views

Box Plot Log Scaled?

When making box plots to represent data, is it logical to set our axis scale to logarithmic? Or does that defeat the whole point of a box plot?
1
vote
1answer
38 views

Generating statistics from data samples, that are of snapshots.

My question is part math part computers but I need more of the math answer then a computer answer. I am going to be grabing snapshots of a moment of time on how a computer is performing. Because of ...
3
votes
3answers
355 views

1/f “Pink Noise” for the Math-Disabled

I have very little skill when it comes to math beyond all the elementary level operations (addition, subtraction, multiplication, division, mean, mode, etc) and a vague grasp of statistics, what a ...
0
votes
1answer
129 views

Best Fit Line/Linear least squares fits

In my Physics intro/data analysis lecture, theres some mention of "Linear least squares fits": Gradient $$m = \frac{1}{\Delta} (N \sum x_i y_i - \sum x_i \sum y_i)$$ $$\sigma_m = ...
2
votes
2answers
497 views

Solving this pie-chart

Hi could anyone please guide me on how I would go about calculating the percentage of a specific sector from this Pi-chart. I think I am suppose to use data from the bar chart and apply it to the ...
2
votes
2answers
1k views

What is the correct way to plot histogram?

When we plot the frequency histogram, the frequency is equal to the area of the bar or the height of the bar? Is $\text{height} = \frac{\text{frequency}}{\text{size of the class}}$ ? If so, then how ...
1
vote
1answer
200 views

Weibull Distribution Behaving Weirdly?

I'm attempting to fit a cumulative Weibull curve to some psychophysics perception data. Basically, we're testing the subject's accuracy at a number of different motion speeds, and attempting to fit ...
3
votes
2answers
236 views

Stupid graph or stupid me?

Reading the Microsoft TechNet article "Test results: Extra-large scenario (FAST Search Server 2010 for SharePoint)", I came across this graph. Now, am I stupid (and if so, could someone please ...
1
vote
2answers
188 views

dividing samples in equal slabs

I have sample data like in above format along X, Y axis. Now what i would like to do is to devide it in "n" number of slabs having fixed values. Now how do i achive this in mathematics(statistics). ...