Measures of Central Location: Measures of Central Location

Measures of Central Location

Section 2.2 elaborates on mean, median, and mode at the population and sample levels. This section contains many interesting examples and exercises. Section 2.3 uses many examples to discuss range, variance, and standard deviation. Complete the odd-numbered problems in the exercise sets for each section before checking the answers.

This section could be titled "three kinds of averages of a data set". Any kind of "average" is meant to be an answer to the question "Where do the data center?" It is thus a measure of the central location of the data set. We will see that the nature of the data set, as indicated by a relative frequency histogram, will determine what constitutes a good answer. Different shapes of the histogram call for different measures of central location.

This text was adapted by Saylor Academy under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 License without attribution as requested by the work's original creator or licensor.

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()