Surface-water salinity measurements from Whitewater Bay, Florida

Source: R/BSDA-package.R

Data for Exercise 5.27 and 5.64

Salinity

Format

A data frame/tibble with 48 observations on one variable

salinity

surface-water salinity value

Source

J. Davis, Statistics and Data Analysis in Geology, 2nd ed. (New York: John Wiley, 1986).

References

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

Examples


stem(Salinity$salinity)
#> 
#>   The decimal point is 1 digit(s) to the right of the |
#> 
#>   3 | 4
#>   3 | 56679
#>   4 | 00002234
#>   4 | 6666777888999
#>   5 | 00112333
#>   5 | 68899
#>   6 | 000123
#>   6 | 7
#>   7 | 
#>   7 | 8
#> 
qqnorm(Salinity$salinity, pch = 19, col = "purple")
qqline(Salinity$salinity, col = "blue")

t.test(Salinity$salinity, conf.level = 0.99)
#> 
#> 	One Sample t-test
#> 
#> data:  Salinity$salinity
#> t = 37.031, df = 47, p-value < 2.2e-16
#> alternative hypothesis: true mean is not equal to 0
#> 99 percent confidence interval:
#>  45.95012 53.13321
#> sample estimates:
#> mean of x 
#>  49.54167 
#> 
t.test(Salinity$salinity, conf.level = 0.99)$conf
#> [1] 45.95012 53.13321
#> attr(,"conf.level")
#> [1] 0.99