Statistical Tests

  • Thread starter natski
  • Start date
  • #1
267
2
Hi everyone,

I can't remember which statistical tests are needed for the following two tests. I thought maybe the null hypothesis test but wanted to check on here first... Maybe something Bayesian?

Consider you have a plot of y against x with several data points on it, each with y error bars. I would like to calculate the probability that:

a) These points are randomly distributed

b) These points have the same y-value = constant, i.e. y is not a function of x.

Thanks for any advise.

Natski
 

Answers and Replies

  • #2
EnumaElish
Science Advisor
Homework Helper
2,322
124
Describe "error bar."

For part b, my first approach would be to estimate the linear relationship y = a + b*x using least squares and show that b is not statistically significantly different from zero. But "y is not a function of x" is a very general statement; you may have to iterate with polynomial functions (of x), until you run out of data points.
 

Related Threads on Statistical Tests

  • Last Post
Replies
1
Views
2K
M
  • Last Post
Replies
3
Views
3K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
5
Views
5K
Replies
2
Views
2K
  • Last Post
Replies
6
Views
2K
Replies
2
Views
3K
Replies
2
Views
2K
Replies
7
Views
780
  • Last Post
Replies
1
Views
2K
Top