CODEWITHSUNDEEP
rmachine-learning
mayank jindal
mayank jindal

Reputation: 21

Calculating P values for given t value in R

Ques: What is the p-value for the two-tail test(assuming 5% confidence interval) of the hypothesis that the equation intercept is zero?

I have calculated the t value(1.257) for a data set with 51 observations in a linear regression model. Its Degree of freedom is 49.Now how can I calculate the p value based on the above information in R?

Upvotes: 0

Views: 5422

Answers (1)

s_baldur
s_baldur

Reputation: 33488

You probably want to use the cumulative distribution function pt.

t <- 1.257
df <- 49
2 * (1 - pt(q = abs(t), df = df))
[1] 0.2147125

or alternatively:

2 * pt(q = abs(t), df = df, lower=FALSE)

Upvotes: 2

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