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It also shows a worked example using blood pressure reduction data and demonstrates how to determine the median from the diagram. It then introduces tally charts and frequency tables.",{"@graph":14,"@context":72},[15,34,55],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/cie-igcse-maths-core-statistical-diagrams-stem-leaf-diagrams-how-to-draw-and-find-the-median/657377/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/cie-igcse-maths-core-statistical-diagrams-stem-leaf-diagrams-how-to-draw-and-find-the-median/657377.png","ImageObject",300,407,{"name":42,"@type":43},"Aditya","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-10-26",true,{"@type":52,"interactionType":53,"userInteractionCount":33},"InteractionCounter",{"@type":54},"ViewAction",{"@type":56,"mainEntity":57},"FAQPage",[58,64,68],{"name":59,"@type":60,"acceptedAnswer":61},"What is a stem-and-leaf diagram and why is it useful?","Question",{"text":62,"@type":63},"A stem-and-leaf diagram is a simple way of showing data in order. It helps you see patterns easily and is especially useful for finding the median.","Answer",{"name":65,"@type":60,"acceptedAnswer":66},"How do you draw a stem-and-leaf diagram from two-digit data?",{"text":67,"@type":63},"Split each value into stems (tens digit) and leaves (units digit). If the data is not already in order, start with a rough diagram, then arrange stems and leaves in ascending order and add a key.",{"name":69,"@type":60,"acceptedAnswer":70},"How do you find the median from a stem-and-leaf diagram?",{"text":71,"@type":63},"Cross out the lowest and highest values first, then continue crossing out until you reach the middle. 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The key will let us know!  \nHow doI |nd the median from a stem-and-leaf diagram?  \n To |nd the median ...  \n Lightly cross out numbers from the beginning and end  \n i. e. -cross out the lowest number and the highest number  \n be careful with the highest number- it will be at the end of the last stem  \n Continue crossing out the next lowest/highest numbers until you meet in the middle  \n if two numbers remain in the middle, |nd the midpoint between them  \n if the midpoint isn 't obvious then add them together and halve  \n A common mistake when |nding the median isto not put the number back into its original format and to only use the leaf  \n e. g. Median = 6 instead of Median = 26  \nPage 3 of 27  \n© 2015 − 2024 Save My Exams, Ltd. · Revision Notes, Topic Questions, Past Papers  \nYour notes  \nHead to www.savemyexams. com for more awesome resources  \n\n|  Worked example\u003Cbr>A hospital is investigating a new drug that claims to reduce blood pressure. They give a set of patients the new drug and three hours later record the amount the blood pressure of every patient has reduced (or increased) by. The results, measured in mmHG (millimetres of mercury) are given below.\u003Cbr>12 31 24 18 21 34 40 19 23 17 16 a) Draw astem and leaf diagram to show these results.\u003Cbr>The data is not in order sothe |rst step isto draw a rough diagram.\u003Cbr>All values are two digit so split each so that the |rst (tens) digit is a stem and th","cbCaiuJmMmpADtTW","https://ap.wps.com/l/cbCaiuJmMmpADtTW","pdf",2922098,27,"English","# Statistical Diagrams\n## Stem & Leaf Diagrams\n## How do I draw a stem-and-leaf diagram?\n## How do I find the median from a stem-and-leaf diagram?\n## Worked example\n## Tally Charts & Frequency Tables\n## What is a frequency table?\n## What is a tally chart?","[{\"question\":\"What is a stem-and-leaf diagram and why is it useful?\",\"answer\":\"A stem-and-leaf diagram is a simple way of showing data in order. It helps you see patterns easily and is especially useful for finding the median.\"},{\"question\":\"How do you draw a stem-and-leaf diagram from two-digit data?\",\"answer\":\"Split each value into stems (tens digit) and leaves (units digit). If the data is not already in order, start with a rough diagram, then arrange stems and leaves in ascending order and add a key.\"},{\"question\":\"How do you find the median from a stem-and-leaf diagram?\",\"answer\":\"Cross out the lowest and highest values first, then continue crossing out until you reach the middle. If two values remain, take the midpoint between them.\"}]","CIE IGCSE Maths - Core - Statistical Diagrams - Stem & Leaf Diagrams - How to draw and find the median | PDF",68]