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#1 2007-06-14 02:14:34

MickD
Member
Registered: 2007-06-13
Posts: 2

Linear Regression

Can anyone help with this

Confirm the swing of a simple pendulum
Time to complete swing T in secs
Pendulum length in L in meters

T>2(S>2)          Lm
3.4225               0.85
5.4756               1.36
6.8644               1.71
8.41                   2.09

Using linear regression find
the equation of the line T>2 against L anf the correlation coefficient

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#2 2007-06-18 14:53:41

John E. Franklin
Member
Registered: 2005-08-29
Posts: 3,588

Re: Linear Regression

The first number is always close to length times 4, I noted.
But 4 points of data is not enough for a good analysis.
Good = 4 letters.  Better = 6 letters  Student T-distribution needs 20 plus points of data I think.
But I'm way off the subject, and don't know linear regression, sorry.


igloo myrtilles fourmis

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