# ============================================================
# Basic Statistics in R
# R Foundations — Rverse Analytics
# https://rverseanalytics.com/learn/basic-statistics
# ============================================================

# Basic Statistics in R
# 1. Summary statistics
scores <- c(88, 92, 79, 95, 84, 90, 76, 88)
mean(scores)
sd(scores)
summary(scores)
# 2. A frequency table
table(mtcars$cyl)
# 3. Correlation:  -1 to +1
cor(mtcars$wt, mtcars$mpg)
# 4. Your first t-test: does gearbox affect mpg?
t.test(mpg ~ am, data = mtcars)
# 5. A simple linear model
model <- lm(mpg ~ wt, data = mtcars)
summary(model)