Hello,
I'm a R beginner and I want to make a Multiple Regression about birds. My data
is stord in a .csv file.
I tried to do this with the following code:
reg.data <- read.table(file.choose(),header=T, sep=";",dec=",")
attach(reg.data)
names(reg.data)
model <- lm(Flights ~ Age + Gender + weight + CountryGermany + CountryItaly +
CountrySpain + CountryAustria + CountrySwiss + CountryGB + CountryFrance +
CountryIreland + CountryNL + CountryBelgium + CountrySweden + CountryNorway +
CountryUSA + CountryBrasil)
plot(model)
After the function plot(model), I get the two Warnings:
1: NaNs produced in: In sqrt(crit * p * (1 - hh)/hh)
2: NaNs produced in: In sqrt(crit * p * (1 - hh)/hh)
Can anybody tell me:
- How can I interpret this warnings?
- How I can find out at which point this warning apears?
- How I can find out which column is responsible for the error?
- And if there is a possiblity to avoid this warnings?
Thanks
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