{"id":278,"date":"2021-04-28T15:20:00","date_gmt":"2021-04-28T20:20:00","guid":{"rendered":"https:\/\/projectmanagementacademy.net\/resources\/?p=278"},"modified":"2025-12-02T11:58:19","modified_gmt":"2025-12-02T16:58:19","slug":"scatter-diagram-types","status":"publish","type":"post","link":"https:\/\/projectmanagementacademy.net\/resources\/blog\/scatter-diagram-types\/","title":{"rendered":"Scatter Diagram Types"},"content":{"rendered":"\n<p>To understand the impact of scatter diagrams, it is important to know the correlation between the data sets has the most meaning. Also, knowing how the data correlates aids with determining the type of scatter diagram. When preparing for the PMP exam, project managers should know the three categories of scatter diagrams based on correlation:<\/p>\n\n\n\n<!--more-->\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"color: #3a3a3a;\">Scatter Diagram with No Correlation<\/span><\/li>\n\n\n\n<li><span style=\"color: #3a3a3a;\">Scatter Diagram with Moderate Correlation<\/span><\/li>\n\n\n\n<li><span style=\"color: #3a3a3a;\">Scatter Diagram with Strong Correlation<\/span><\/li>\n<\/ul>\n\n\n\n<p><span style=\"color: #404040;\">In plotting figures from specific quality metrics, the project manager will graph ordered pairs on the X,Y axis. Listing data in a table will not have the same impact as visually showing it on a graph; PMP credential holders know when measuring variables, it is not only the accuracy of the data which matters, but how it is communicated. Scatter diagrams are a tool to assess and communicate quality control. <\/span><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-2 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><\/p>\n\n\n\n<p><strong>On this page:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/projectmanagementacademy.net\/resources\/project-quality-management-pmp\/#data-representation-in-quality-management\"><\/a><a href=\"https:\/\/projectmanagementacademy.net\/resources\/blog\/scatter-diagram-types\/#Scatter-Diagram-Correlations\">Correlation of Scatter Diagrams<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/projectmanagementacademy.net\/resources\/project-quality-management-pmp\/#data-representation-in-quality-management\"><\/a><a href=\"https:\/\/projectmanagementacademy.net\/resources\/blog\/scatter-diagram-types\/#Scatter-Diagram-Uses\">Scatter Diagram Uses<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/projectmanagementacademy.net\/resources\/project-quality-management-pmp\/#data-representation-in-quality-management\"><\/a><a href=\"https:\/\/projectmanagementacademy.net\/resources\/blog\/scatter-diagram-types\/#Scatter-Diagram-for-the-PMP-Exam\">Scatter Diagrams for the PMP Exam<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/projectmanagementacademy.net\/resources\/blog\/scatter-diagram-types\/#Scatter-Diagram-Examples\">Scatter Diagram Examples<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/projectmanagementacademy.net\/resources\/blog\/scatter-diagram-types\/#Scatter-Diagram-PMP\">Scatter Diagram PMP<\/a><\/li>\n<\/ul>\n\n\n\n<p><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-1 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:40%\">\n<figure class=\"wp-block-image alignright size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"183\" height=\"250\" src=\"https:\/\/e360-media.s3.amazonaws.com\/2021\/06\/22121647\/Ultimate-Data-Quality-Guide-Thumbnail-1-183x250-1.png\" alt=\"\" class=\"wp-image-1650\" style=\"width:137px;height:188px\"\/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:60%\">\n<p class=\"has-text-align-left\"><br><strong>Free Download: <\/strong><br><strong>The Ultimate Data Quality Guide<\/strong><\/p>\n\n\n\n<p><em>Learn about the 7 data quality<\/em><br><em> tools every project manager <\/em><br><em>should know!<\/em><\/p>\n<\/div>\n<\/div>\n\n\n\n\n\t\t\t\t\t<script>\n\t\t\t\t\t\thbspt.enqueueForm({\n\t\t\t\t\t\t\tportalId: 3294842,\n\t\t\t\t\t\t\tformId: \"337e0f3b-15f5-4cb5-9041-20ee1e2444ae\",\n\t\t\t\t\t\t\ttarget: \"#hbspt-form-1776460102000-5908731289\",\n\t\t\t\t\t\t\tregion: \"na1\",\n\t\t\t\t\t\t\t\n\t\t\t\t\t\t});\n\t\t\t\t\t<\/script>\n\t\t\t\t\t<div class=\"hbspt-form\" id=\"hbspt-form-1776460102000-5908731289\"><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Scatter-Diagram-Correlations\">Correlation of Scatter Diagrams<\/h2>\n\n\n\n<p><span style=\"color: #404040;\">If a relationship is found between the two variables, it is called a \u201ccorrelation,\u201d A regression line can be used \u201c<\/span><span style=\"color: black;\"><a href=\"https:\/\/pmvidya.com\/blog\/scatter-diagram\/\">to estimate how a change to an independent variable will influence the value of the dependent variable<\/a><\/span><span style=\"color: #393939;\">.\u201d A c<\/span><span style=\"color: black;\">orrelation may be identified when there is a <a href=\"https:\/\/www.izenbridge.com\/blog\/scatter-diagram-scatter-plot-and-its-development\/\">cause and effect relationship between two parameters.<\/a> The direction of the correlation on the graph indicates the type of scatter diagram and the type of relationship between variables. <\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/f.hubspotusercontent40.net\/hubfs\/3294842\/Scatter%201.jpg\" alt=\"Scatter 1\"\/><\/figure>\n\n\n\n<p><span style=\"color: #393939;\">&nbsp;<\/span><\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/f.hubspotusercontent40.net\/hubfs\/3294842\/Scatter%202.jpg\" alt=\"Scatter 2\"\/><\/figure>\n\n\n\n<p>A key aspect of understanding correlation says just because a relationship exists between two variables does not automatically mean there is causality. The phrase \u201c<span style=\"color: black;\">correlation does not imply causation\u201d should be known by any project manager and PMP credential holder who uses scatter diagrams. The <\/span><a href=\"https:\/\/chartio.com\/learn\/charts\/what-is-a-scatter-plot\/#:~:text=A%20scatter%20plot%20(aka%20scatter,to%20observe%20relationships%20between%20variables.\">observed relationship could<\/a><span style=\"color: black;\"> be:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"color: black;\">driven by a third variable, or<\/span><\/li>\n\n\n\n<li><span style=\"color: black;\">reversed by the causal link, or<\/span><\/li>\n\n\n\n<li><span style=\"color: black;\">simply coincidental.<\/span><\/li>\n<\/ul>\n\n\n\n<p>Creating scatter diagrams is part of the PMP holder\u2019s work, but when the graph has been completed, it does not mean the work is done. The analysis of the graph, identifying any potential correlations, and determining the connections to quality are what bring value to the scatter diagram tool.<\/p>\n\n\n\n<div class=\"wp-block-group is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-align-center has-medium-font-size\"><strong>Studying for the PMP Exam?<\/strong><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-horizontal is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-1 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50 is-style-fill\"><a class=\"wp-block-button__link has-white-color has-text-color has-background wp-element-button\" href=\"https:\/\/projectmanagementacademy.net\/free-pmp-questions?cat=pmp-quality\" style=\"border-radius:20px;background-color:#366194\" target=\"_blank\" rel=\"noreferrer noopener\">Practice Questions on Quality<\/a><\/div>\n<\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator has-css-opacity is-style-wide\"\/>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Scatter-Diagram-Uses\">Scatter Diagram Uses<\/h2>\n\n\n\n<p>Determining a correlation between variables can enable <a href=\"https:\/\/project-management-knowledge.com\/definitions\/s\/scatter-diagram\/\">better decisions for the project<\/a>. The American Society for Quality <a href=\"https:\/\/asq.org\/quality-resources\/scatter-diagram\">(ASQ) provides these potential uses for the scatter diagram<\/a> when determining if two variables are related:<span style=\"color: #090909;\">&nbsp;<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>to identify potential root causes of problems,<\/li>\n\n\n\n<li>to determine objectively whether a particular cause and effect are related, or<\/li>\n\n\n\n<li>to determine whether two effects that appear to be related both occur with the same cause.<\/li>\n<\/ul>\n\n\n\n<p>As a quality control tool, scatter diagrams can help the PMP holder with identifying correlations between variables, thus advising process and resource decisions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Scatter-Diagram-for-the-PMP-Exam\">Scatter Diagrams for the PMP Exam<\/h2>\n\n\n\n<p><span style=\"color: black;\">It is important to know what scatter diagrams are in PMP terms as part of the exam preparation process. For the PMP exam, project managers should know about scatter diagrams, including:<\/span><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><span style=\"color: black;\">knowing the definition of the term (<\/span>6<sup>th<\/sup> edition of the <em><a href=\"http:\/\/www.pmi.org\/PMBOK-Guide-and-Standards.aspx\">PMBOK<\/a><\/em>\u00ae <em>Guide<\/em>),<\/li>\n\n\n\n<li>recognizing a visual depiction of the relationship between two variables<\/li>\n\n\n\n<li><a href=\"https:\/\/projectmanagementacademy.net\/resources\/blog\/histograms-and-the-pmp-certification\/\">listing the Seven Quality Tools<\/a>, including scatter diagrams<\/li>\n<\/ul>\n\n\n\n<p>Scenario questions may require the future PMP holder to interpret data in scatter diagrams or select the best quality tool to use in a specific situation. The Project Management Institute\u00ae (PMI) provides a <a href=\"https:\/\/www.pmi.org\/certifications\/project-management-pmp\/earn-the-pmp\/pmp-exam-preparation\/pmp-reference-list\">PMP exam reference list<\/a>; although there is not a specific scatter diagram example for the PMP exam, a general understanding of this tool is expected. Additionally, being able to interpret scatter diagrams for the PMP exam enhances overall project management skillsets for work settings.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Scatter-Diagram-Examples\">Scatter Diagram Examples<\/h2>\n\n\n\n<p>A background in statistics is not required to use scatter diagrams. Microsoft Excel and other software packages can do the computations needed to create the diagram. What is needed is an understanding of the concept and the resulting data, and how to interpret it correctly. Consider this example:<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/f.hubspotusercontent40.net\/hubfs\/3294842\/Scatter%203.jpg\" alt=\"Scatter 3\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/f.hubspotusercontent40.net\/hubfs\/3294842\/Scatter%204.jpg\" alt=\"Scatter 4\"\/><\/figure>\n\n\n\n<p>When considering scatter diagrams from the PMP exam perspective, the trend line can help the team see correlations between the data. As seen in the below business setting example, two sets of variables are measured over the same period, the data is plotted on the (X,Y) axis, and then any potential relationship is examined.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"https:\/\/f.hubspotusercontent40.net\/hubfs\/3294842\/Scatter%205.jpg\" alt=\"\"\/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"Scatter-Diagram-PMP\">Scatter Diagram PMP<\/h2>\n\n\n\n<p>When seeking to identify a correlation between two variables, scatter diagrams may be the best fit. It can \u201c<a href=\"https:\/\/pmvidya.com\/blog\/scatter-diagram\/\">demonstrate a relationship between any element of a process, environment, or activity on one axis and a quality defect on the other axis<\/a>.\u201d Use the scatter diagram as a standalone tool or in conjunction with other quality tools to ensure decisions are data-driven.<\/p>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p style=\"font-size:25px\"><strong>Upcoming PMP Certification Training &#8211; Live &amp; Online Classes<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><table class=\"table table-striped table-bordered table-responsive-sm font-md mt-5 mb-0 d-none d-md-table\"><tr><td>Name<\/td><td>Date<\/td><td>Place<\/td><td><\/td><\/tr><\/table>\n<\/div><\/div>\n\n\n\n<p><\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:45px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<hr class=\"wp-block-separator is-style-wide\"\/>\n\n\n\n<div style=\"height:25px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>To understand the impact of scatter diagrams, it is important to know the correlation between the data sets has the most meaning. Also, knowing how the data correlates aids with determining the type of scatter diagram. When preparing for the PMP exam, project managers should know the three categories of scatter diagrams based on correlation:<\/p>\n","protected":false},"author":1,"featured_media":1224,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[12,13],"tags":[],"class_list":["post-278","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pmp-exam-prep","category-pmp-quality"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - 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