data collection and analysis
Data and Statistics refers to the way we collect, analyze and display information. As reference use this website, your notebooks and chapter 6 in your textbook.
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Here is a good website to explore the different kinds of graphs
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We analyze data so we can understand what it is telling us. The central measure of tendency is the main idea and can be described best by using either the mean, median or the mode. Which one you ask? It depends on the data.
Mean - use the mean when the data values are evenly spread out
Median - use the median if there is one or more outliers in the data
Mode - use the mode if one value repeats several times
To help you remember how to calculate these 3 possible measures of tendency watch the video.
Wait, what about the range? Range is important even if it is not a central measure of tendency! Range describes how spread out the data is. Range is the difference between the maximum and minimum data values. (Yes, just that simple subtract.)
Mean - use the mean when the data values are evenly spread out
Median - use the median if there is one or more outliers in the data
Mode - use the mode if one value repeats several times
To help you remember how to calculate these 3 possible measures of tendency watch the video.
Wait, what about the range? Range is important even if it is not a central measure of tendency! Range describes how spread out the data is. Range is the difference between the maximum and minimum data values. (Yes, just that simple subtract.)