Three Popular Data Displays

Key Takeaways

Graphical representations of large data sets provide a quick overview of the nature of the data.
A population or a very large data set may be represented by a smooth curve. This curve is a very fine relative frequency histogram in which the exceedingly narrow vertical bars have been omitted.
When a curve derived from a relative frequency histogram is used to describe a data set, the proportion of data with values between two numbers $a$ and $b$ is the area under the curve between $a$ and $b$ , as illustrated in Figure 2.6 "A Very Fine Relative Frequency Histogram".

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 97 of /mod/book/tool/print/index.php: call to core\output\core_renderer->footer()