From 604811191c62f3d421f6291792bb474ffc1ad598 Mon Sep 17 00:00:00 2001 From: eggy Date: Sun, 27 Sep 2020 20:31:06 -0400 Subject: [PATCH] math: percentile grouped data --- docs/mhf4u7.md | 1 + 1 file changed, 1 insertion(+) diff --git a/docs/mhf4u7.md b/docs/mhf4u7.md index 67cefe9..48d98c0 100644 --- a/docs/mhf4u7.md +++ b/docs/mhf4u7.md @@ -101,6 +101,7 @@ The first and third quartiles are the median of the **[minimum, median)** and ** - The median is the midpoint of the class it resides in. - The third quartile is the midpoint of the class it resides in. - The maximum value is now the upper class boundary of the highest class. If the highest value is excluded (e.g., $90≤x<100$), it also must be excluded when representing data (e.g., open dot instead of filled dot). + - A specific percentile can be found by guesstimating the value on a cumulative frequency curve. The **interquartile range (IQR)** is equal to $Q_3 - Q_1$ and represents the range where 50% of the data lies.