Evaluating the effectiveness of stem cell treatment
Now that we set out hypotheses, we can calculate the observed difference in means between the treatment and control groups. The stem.cell
data frame gives us the pumping capacity of the heart before and after the experiment. So first we need to find the difference between these for each experimental unit, and then use these change
values to calculate the observed difference in mean change between treatment and control groups.
Este ejercicio forma parte del curso
Inference for Numerical Data in R
Ejercicio interactivo práctico
Prueba este ejercicio y completa el código de muestra.
# Calculate difference between before and after
stem.cell <- stem.cell %>%
___(change = ___)