Data for Exercise 6.79

Step

## Format

A data frame/tibble with 12 observations on one variable

score

State test of educational progress (STEP) science test score

## References

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

## Examples


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

#> Size (n)  Missing  Minimum   1st Qu     Mean   Median   TrMean   3rd Qu
#>   12.000    0.000   58.000   65.500   71.417   71.500   71.417   79.250
#>     Max.   Stdev.     Var.  SE Mean   I.Q.R.    Range Kurtosis Skewness
#>   82.000    8.140   66.265    2.350   13.750   24.000   -1.420   -0.165
#> SW p-val
#>    0.621
t.test(Step$score, mu = 80, alternative = "less") #> #> One Sample t-test #> #> data: Step$score
#> t = -3.6526, df = 11, p-value = 0.001902
#> alternative hypothesis: true mean is less than 80
#> 95 percent confidence interval:
#>      -Inf 75.63684
#> sample estimates:
#> mean of x
#>  71.41667
#>
wilcox.test(Step$score, mu = 80, alternative = "less") #> Warning: cannot compute exact p-value with ties #> Warning: cannot compute exact p-value with zeroes #> #> Wilcoxon signed rank test with continuity correction #> #> data: Step$score
#> V = 3, p-value = 0.004343
#> alternative hypothesis: true location is less than 80
#>