Standardized exam scores for 13 patients to investigate the learning ability of schizophrenics after a specified dose of a tranquilizer

Source: R/BSDA-package.R

Data for Example 6.10

Schizoph

Format

A data frame/tibble with 13 observations on one variable

score

schizophrenics score on a standardized exam one hour after recieving a specified dose of a tranqilizer.

References

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

Examples


hist(Schizoph$score, xlab = "score on standardized test", 
main = "Example 6.10", breaks = 10, col = "orange")

EDA(Schizoph$score)
#> [1] "Schizoph$score"

#> Size (n)  Missing  Minimum   1st Qu     Mean   Median   TrMean   3rd Qu 
#>   13.000    0.000   15.000   20.500   22.923   23.000   22.923   26.000 
#>     Max.   Stdev.     Var.  SE Mean   I.Q.R.    Range Kurtosis Skewness 
#>   30.000    4.132   17.077    1.146    5.500   15.000   -0.795   -0.250 
#> SW p-val 
#>    0.980 
t.test(Schizoph$score, mu = 20)
#> 
#> 	One Sample t-test
#> 
#> data:  Schizoph$score
#> t = 2.5504, df = 12, p-value = 0.02545
#> alternative hypothesis: true mean is not equal to 20
#> 95 percent confidence interval:
#>  20.42588 25.42028
#> sample estimates:
#> mean of x 
#>  22.92308 
#>