Data for Exercise 6.47

Devmath

## Format

A data frame/tibble with 40 observations on one variable

score

first exam score

## Source

Data provided by Dr. Anita Kitchens.

## References

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

## Examples


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

#> Size (n)  Missing  Minimum   1st Qu     Mean   Median   TrMean   3rd Qu
#>   40.000    0.000   39.000   65.500   74.400   76.500   74.917   87.750
#>     Max.   Stdev.     Var.  SE Mean   I.Q.R.    Range Kurtosis Skewness
#>  100.000   16.495  272.092    2.608   22.250   61.000   -0.521   -0.503
#> SW p-val
#>    0.095
t.test(Devmath$score, mu = 80, alternative = "less") #> #> One Sample t-test #> #> data: Devmath$score
#> t = -2.1471, df = 39, p-value = 0.01903
#> alternative hypothesis: true mean is less than 80
#> 95 percent confidence interval:
#>      -Inf 78.79436
#> sample estimates:
#> mean of x
#>      74.4
#>