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Results tagged with t-test
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user 93623
A test for comparing the means of two samples, or the mean of one sample (or even parameter estimates) with a specified value; also known as the "Student t-test" after the pseudonym of its inventor.
4
votes
Regression with a 0-1 variable. Should be the same as running a t-test, but I get a differen...
If you set var.equal=TRUE in the t.test() call, they should be equivalent. Eg:
set.seed(1)
x <- sample(0:1, 100, rep=TRUE)
y <- rnorm(length(y)) + x
dtf <- data.frame(x, y)
summary(lm(y ~ x, data=dtf …
- 471
0
votes
Two- Sample T test on Employment Data
The p-value is correct, the error lies in your method. If we plot the time series I think this will become obvious.
# Data
employees <- read.csv("https://fred.stlouisfed.org/graph/fredgraph.csv?i …
- 471