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Summary Stastics

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Summary statistics give us an idea about where the centre of the distribution is and how the distribution is spread out. The data needs to be in ordered form to calculate the summary statistics.

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11 Pages Partial Study Notes > 2 Years old
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Summary Stastics
Topics this document covers:
Descriptive statistics Data analysis Summary statistics Robust statistics Means Moment Interquartile range Statistical dispersion Median Quartile Plot Outlier
This is a Partial Set of Study Notes

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Topics this document covers:
Descriptive statistics Data analysis Summary statistics Robust statistics Means Moment Interquartile range Statistical dispersion Median Quartile Plot Outlier
Sample Text:
The data needs to be in ordered form to calculate the summary statistics. Measures of Centre The MEAN is the average score in the set but it is affected by extreme values or outliers. In data that is skewed or is affected by outliers the MEDIAN is a more useful measure of centre. Measures of Variability/Spread It is useful to be able to measure the amount of spread (or variability) in the data. The RANGE is the most basic measure but it is affected by extreme values. The IQR (which excludes the top and bottom quarters of the data) gives us a measure of the spread of a set of data without being affe...
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