BSDA (version 1.2.1)

Stamp: Thicknesses of 1872 Hidalgo stamps issued in Mexico

Description

Data for Statistical Insight Chapter 1 and Exercise 5.110

Usage

Stamp

Format

A data frame/tibble with 485 observations on one variable

thickness

stamp thickness (in mm)

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

hist(Stamp$thickness, freq = FALSE, col = "lightblue", 
     main = "", xlab = "stamp thickness (mm)")
lines(density(Stamp$thickness), col = "blue")
t.test(Stamp$thickness, conf.level = 0.99)