"%" vs "%pt."

[AdaemmerP]

When comparing percentage differences, the book uses "%" instead of percentage points (pp. or %pt.), for example here:

ModernDive_book/09-hypothesis-testing.Rmd

Line 745 in 924cd4e

So in this one sample of a hypothetical universe of no difference in genre popularity, $`r n_metal_popular`/26 = `r prop_metal_popular` = `r prop_metal_popular*100`\%$ of metal songs were popular. On the other hand, $`r n_deephouse_popular`/26 = `r prop_deephouse_popular` = `r prop_deephouse_popular*100`\%$ of deep house songs were popular. Let's next compare these two values. It appears that metal tracks were popular at a rate that was $`r prop_metal_popular ` - `r prop_deephouse_popular ` = `r diff_prop` = `r diff_prop*100`\%$ different than deep house songs.

ModernDive_book/09-hypothesis-testing.Rmd

Line 791 in 924cd4e

$$\widehat{p}_{m} -\widehat{p}_{f} = `r p_metal_popular` - `r p_deephouse_popular` = `r observed_test_statistic` = `r observed_test_statistic*100`\%$$.