Histograms

Questions

Question 1 out of 2.

When discussing a histogram, what does "bin width" mean?

  1. The result of subtracting the smallest observation from the largest.
  2. The average number of scores falling into each interval.
  3. The amount of "skew" shown by the distribution.
  4. The result of dividing the range of scores by the number of classes.

Question 2 out of 2.

If you apply Sturges' rule to a data set including 4000 observations, how many intervals should your histogram have?

  1. The top of the box.
  2. The base 2 logarithm of 4096 (which is close to 4000) is 13, so Sturges' rule recommends 13 + 1 or 14 intervals.
  3. We should have 11 intervals because this is 1 less than the base 2 logarithm of 4000.
  4. According to Sturges' rule, there should be 13 intervals because the base 2 logarithm of 4096 (which is close to 4000) is 12.
Callback before_footer in local_aigrade component should be migrated to new hook callback for core\hook\output\before_footer_html_generation
  • line 7225 of /lib/moodlelib.php: call to debugging()
  • line 7292 of /lib/moodlelib.php: call to {closure}()
  • line 71 of /lib/classes/hook/output/before_footer_html_generation.php: call to get_plugins_with_function()
  • line 987 of /lib/classes/output/core_renderer.php: call to core\hook\output\before_footer_html_generation->process_legacy_callbacks()
  • line 154 of /mod/book/view.php: call to core\output\core_renderer->footer()