{"id":531,"date":"2022-04-13T05:27:24","date_gmt":"2022-04-13T05:27:24","guid":{"rendered":"http:\/\/8thclass.deltapublications.in\/?page_id=531"},"modified":"2025-02-23T06:12:09","modified_gmt":"2025-02-23T06:12:09","slug":"z-12-create-frequency-charts","status":"publish","type":"page","link":"https:\/\/8thclass.deltapublications.in\/index.php\/z-12-create-frequency-charts\/","title":{"rendered":"Z.12 Create frequency charts"},"content":{"rendered":"\n<div class=\"wp-block-group has-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<h2 class=\"wp-block-heading has-text-align-center has-text-color\" style=\"color:#00056d;text-transform:uppercase\"><strong>Create frequency charts<\/strong><\/h2>\n\n\n\n<p class=\"has-large-font-size\"><strong>Key notes !<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#86b323\">1. <strong>Understanding Histograms<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A histogram is a type of bar graph that represents the distribution of numerical data by showing the frequency of data points within specified intervals (bins).<\/li>\n\n\n\n<li>Unlike bar graphs, histograms display data that is continuous, meaning the bars touch each other.<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/7thclass.deltapublications.in\/wp-content\/uploads\/2024\/08\/DELTA-PUBLICATIONS-1-1024x1024.png\" alt=\"\" class=\"wp-image-13811\" style=\"aspect-ratio:1;width:332px;height:auto\"\/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#08da75\">2. <strong>Parts of a Histogram<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Title<\/strong>: Describes what the histogram represents.<\/li>\n\n\n\n<li><strong>X-axis (Horizontal axis)<\/strong>: Represents the intervals or bins of data, showing the range of values grouped together.<\/li>\n\n\n\n<li><strong>Y-axis (Vertical axis)<\/strong>: Represents the frequency or count of data points within each interval.<\/li>\n\n\n\n<li><strong>Bars<\/strong>: Each bar represents the frequency of data points within a specific interval. The height of the bar corresponds to how many data points fall within that interval.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#fe02e0\">3. <strong>Steps to Interpret a Histogram<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Step 1: Read the Title<\/strong>: Understand what the histogram is about.<\/li>\n\n\n\n<li><strong>Step 2: Analyze the X-axis<\/strong>: Look at the intervals to understand the range of data being represented.<\/li>\n\n\n\n<li><strong>Step 3: Analyze the Y-axis<\/strong>: Check the scale to understand the frequency of data points.<\/li>\n\n\n\n<li><strong>Step 4: Examine the Bars<\/strong>: The height of each bar indicates how many data points fall within the corresponding interval.<\/li>\n\n\n\n<li><strong>Step 5: Draw Conclusions<\/strong>: Use the histogram to identify patterns, such as which interval has the most or least data points.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#242cc4\">4. <strong>Identifying Key Features in Histograms<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Peak (Mode)<\/strong>: The tallest bar represents the interval with the highest frequency, also known as the mode.<\/li>\n\n\n\n<li><strong>Spread<\/strong>: Look at how wide the data is spread across the intervals. This shows the range of the data.<\/li>\n\n\n\n<li><strong>Skewness<\/strong>:\n<ul class=\"wp-block-list\">\n<li><strong>Left-skewed (negative skew)<\/strong>: Most data points are concentrated on the right side.<\/li>\n\n\n\n<li><strong>Right-skewed (positive skew)<\/strong>: Most data points are concentrated on the left side.<\/li>\n\n\n\n<li><strong>Symmetrical<\/strong>: Data is evenly distributed on both sides of the peak.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#c09a3a\">5. <strong>Comparing Histograms<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Compare different histograms by looking at the spread, peak, and skewness to understand how the distributions differ.<\/li>\n\n\n\n<li>Compare the height of bars in different histograms to see which data set has more frequent values within certain intervals.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#13d79c\">6. <strong>Common Mistakes to Avoid<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Misinterpreting the intervals: Remember that each bar represents the frequency of data within a specific interval, not individual values.<\/li>\n\n\n\n<li>Confusing histograms with bar graphs: Unlike bar graphs, the bars in histograms touch because the data is continuous.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading has-text-color\" style=\"color:#bea24c\">7. <strong>Applications of Histograms<\/strong><\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Histograms are often used in statistics to display the distribution of data points, such as test scores, temperatures, or any other quantitative data.<\/li>\n\n\n\n<li>They help in identifying the central tendency, spread, and overall shape of the data distribution.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center has-text-color has-large-font-size\" style=\"color:#105000\"><strong>Learn with an example<\/strong><\/p>\n\n\n\n<div class=\"wp-block-group has-large-font-size\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-group has-background\" style=\"background-color:#e9bbbb\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color has-link-color wp-elements-60353146730778c1309cc18891f3aedc\" style=\"color:#b00012\">\u2712\ufe0f <strong>The soccer coach is preparing for the upcoming season by seeing how many goals his team members scored last season.<\/strong><\/p>\n\n\n\n<p>Use the data in the line plot to complete the frequency chart below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-1-7.png\" alt=\"\" class=\"wp-image-6805\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-1-7.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-1-7-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-1-7-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>\u2712\ufe0f Fill in the missing number.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-2-9.png\" alt=\"\" class=\"wp-image-6806\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-2-9.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-2-9-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-design-2-9-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<p>The missing row is for&nbsp;<em>3<\/em>. Count the number of&nbsp;<strong>X<\/strong>&#8216;s in the column for&nbsp;<em>3<\/em>. 7 team members scored exactly 3 goals last season. The missing number is 7.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled_design__3_-removebg-preview-4.png\" alt=\"\" class=\"wp-image-6807\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled_design__3_-removebg-preview-4.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled_design__3_-removebg-preview-4-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled_design__3_-removebg-preview-4-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#c5e6b8\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color has-link-color wp-elements-1428d0f7f7873f23266944ef67370efe\" style=\"color:#b00012\">\u2712\ufe0f <strong>A pet store owner had her staff count the number of fish in each tank.<\/strong><\/p>\n\n\n\n<p>Use the data in the histogram to complete the frequency chart below.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"200\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-17.png\" alt=\"\" class=\"wp-image-6811\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-17.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-17-300x120.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p>\u2712\ufe0f Fill in the missing number.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"200\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-1-8.png\" alt=\"\" class=\"wp-image-6812\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-1-8.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-1-8-300x120.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<p>The missing row is for&nbsp;<em>21-25<\/em>. Read the height of the bar for&nbsp;<em>21-25<\/em>. 5 tanks have between 21 and 25 fish. The missing number is 5.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"200\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled__500___200px___2_-removebg-preview-3.png\" alt=\"\" class=\"wp-image-6813\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled__500___200px___2_-removebg-preview-3.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled__500___200px___2_-removebg-preview-3-300x120.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n\n\n\n<p><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group has-background\" style=\"background-color:#adeab8\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group has-background-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"has-text-color has-link-color wp-elements-8ccfb925ffbda6674e51f8af9e26ca29\" style=\"color:#b00012\">\u2712\ufe0f <strong>While hanging Christmas lights for neighbours, Ed counted the number of broken lights on each string.<\/strong><\/p>\n\n\n\n<p>Use the data to complete the frequency chart below.<\/p>\n\n\n\n<p>Broken lights per string<\/p>\n\n\n\n<p>3&nbsp;&nbsp; 3&nbsp;&nbsp; 4&nbsp;&nbsp; 4&nbsp;&nbsp; 4&nbsp;&nbsp; 5&nbsp;&nbsp; 5&nbsp;&nbsp; 6&nbsp;&nbsp; 6&nbsp;&nbsp; 6&nbsp;&nbsp; 6&nbsp;&nbsp; 7&nbsp;&nbsp; 8&nbsp;&nbsp;<\/p>\n\n\n\n<p>\u2712\ufe0fFill in the missing number.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"200\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-3-7.png\" alt=\"\" class=\"wp-image-6816\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-3-7.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled-500-\u00d7-200px-3-7-300x120.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<p>The missing row is for&nbsp;<em>4<\/em>. 3 strings had 4 broken lights. The missing number is 3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"200\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled__500___200px___4_-removebg-preview-4.png\" alt=\"\" class=\"wp-image-6817\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled__500___200px___4_-removebg-preview-4.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/02\/Untitled__500___200px___4_-removebg-preview-4-300x120.png 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div><\/div>\n\n\n\n<p class=\"has-text-color has-large-font-size\" style=\"color:#d90000\">let&#8217;s practice!<\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76716\/580\/200\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-189.png\" alt=\"\" class=\"wp-image-9116\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-189.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-189-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-3-189-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/wordwall.net\/play\/76759\/756\/350\"><img loading=\"lazy\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-194.png\" alt=\"\" class=\"wp-image-9117\" srcset=\"https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-194.png 500w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-194-300x300.png 300w, https:\/\/8thclass.deltapublications.in\/wp-content\/uploads\/2023\/05\/Worksheet-1-1-2-194-150x150.png 150w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/figure>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Create frequency charts Key notes ! 1. Understanding Histograms 2. Parts of a Histogram 3. Steps to Interpret a Histogram 4. Identifying Key Features in Histograms 5. Comparing Histograms 6. Common Mistakes to Avoid 7. Applications of Histograms Learn with an example \u2712\ufe0f The soccer coach is preparing for the upcoming season by seeing how<a class=\"more-link\" href=\"https:\/\/8thclass.deltapublications.in\/index.php\/z-12-create-frequency-charts\/\">Continue reading <span class=\"screen-reader-text\">&#8220;Z.12 Create frequency charts&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-531","page","type-page","status-publish","hentry","entry"],"aioseo_notices":[],"_hostinger_reach_plugin_has_subscription_block":false,"_hostinger_reach_plugin_is_elementor":false,"_links":{"self":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/comments?post=531"}],"version-history":[{"count":22,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/531\/revisions"}],"predecessor-version":[{"id":19933,"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/pages\/531\/revisions\/19933"}],"wp:attachment":[{"href":"https:\/\/8thclass.deltapublications.in\/index.php\/wp-json\/wp\/v2\/media?parent=531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}