Describing data - How measures of location and spread compare
7 important questions on Describing data - How measures of location and spread compare
What are the measures of locations? And what are the measures of spread?
- Sample mean and median
- Standard deviation and interquartile range
Which measures of spread and location are more informative when the data includes extreme observations?
1. What is the difference between the mean and the median? 2. What is the consequence in a asymmetric dataset?
- The median is the middle value of the data, the mean is the center of gravity.
- The mean is displaced from the location of the "typical" measurement of the data.
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Why is the sd more sensitive to extreme observations than the mean?
Which is a better indicator of the spread of the main part of the distribution: the interquartile range or the sd, why?
When do the mean and median yield similar information?
What is the most important descriptive statistic for a categorical variable?
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