Differences

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--- sift:build_nds:nd_summary_statistics [2024/11/26 20:29] – wikisysop
+++ sift:build_nds:nd_summary_statistics [2024/12/18 14:47] (current) – [Median Absolute Deviation] wikisysop
@@ Line 7: / Line 7: @@
 If there are statistics you wish to calculate they are not included here, email info@has-motion.ca and let us know!
-----
 ===== Measures of Central Tendencies =====
@@ Line 119: / Line 119: @@
 **Definition:** The value of a sorted data set where x% of the data is below that value.\\
-**Equation:** {{:sift:build_nds:percentileeq.png?125}}
+**Equation:** {{:sift:build_nds:percentileseq.png?125}}\\
+{{:sift:build_nds:percentileseq2.png?100}}\\
-Px = the value at which x percent of data lies below
+x = percentile of interest\\
-n = total number of points in the data set
+Pi = index of xth percentile in the data set\\
+n = total number of points in the data set\\
+X = sorted data set\\
+Px = the data value at index Pi\\
 //Note: in this implementation, we provide the 5th and 95th percentiles.//
@@ Line 131: / Line 134: @@
 **Definition:** The measure of variability representing the average distance of each data point and the mean of the data set.\\
-**Equation:** {{:sift:build_nds:madeq.png?125}}
+**Equation:** {{:sift:build_nds:madeq.png?125}}\\
 N = the number of points in the data set\\
 u = the **mean** of the data set\\
@@ Line 141: / Line 144: @@
 **Definition:** The measure of variability representing the average distance of each data point and the median of the data set.\\
-**Equation:** {{:sift:build_nds:madeq.png?125}}
+**Equation:** {{:sift:build_nds:madeq.png?125}}\\
 N = the number of points in the data set\\
 u = the **median** of the data set\\
 Xi = each data point in the data set\\